Bell Ringers with EQT Questions Second Semester Physical Science With Answers

Bell Ringers with EQT Questions

Second Semester Physical ScienceWith

Answers

Bell Ringer 1-7

• A train travels 100 kilometers in 4 hours. Calculate its’ average speed.

• A. 10 km/h• B. 20 km/h• C. 25 km/h • D. 50 km/h

Bell Ringer 2-7

• If the distance an object has traveled in a certain amount of time is known, what can be calculated?

• A. velocity• B. acceleration• C. force• D. speed

Bell Ringer 3-7

• A car travels 300 kilometers in 3 hours. What can be determined?

• A. velocity• B. speed• C. average speed• D. acceleration

Bell Ringer 4-7

• A 300 N force acts on a 25 kg object. Calculate the acceleration of the object.

• A. 100 m/s2

• B. 60 m/s2

• C. 30 m/s2

• D. 12 m/s2

Bell Ringer 5-7

• A 3000N force acts on a 200 Kg object. Calculate the acceleration of the object.

• A. 20 m/s2• B. 15 m/s2• C. 30 m/s2• D. 12 m/s2

Bellringer 6-7

• A student riding her bicycle on a straight, flat road covers one block every 7 seconds. Make a statement about her motion.

• A. her velocity is increasing• B. her acceleration is increasing• C. Her speed and velocity are constant• D. her speed and velocity are increasing

Bellringer 7-7

• Two forces act on an object. One force has a magnitude of 10 N and is directed toward the North. The other has a magnitude of 5 N directed toward the south. What is the net force experienced by the object?

• A. 5 N south• B. 15 N south• C. 15 N north• D. 5 N North

Bellringer 8-7

• A bird flies 150 m for 10 s , then 200 m for 10 s and then 100 m for 5 sec. What is the birds’ average speed?

• A. 45 m/s• B. 18 m/s• C. 25 m/s• D. 200 m/s

Bellringer 9-7

• John is in Chicago, IL. He decides to head south to Austin TX. In one hour he travels 80 km. What is his average velocity?

• A. 1.2 km/hr• B. 80 km/hr• C. 40 km/hr• D. 80 km/hr south

Bellringer 10-7

• Maria is on a bus traveling 15 m/s east and she decides to move from the front of the bus to the back. She begins walking to the rear of the bus at a rate of 1 m/s. What is her resultant velocity?

• A. 16 m/s• B. 15 m/s• C. 14 m/s east• D. 0 m/s

Bellringer 11-7

• A friend is helping Yen to rearrange her bedroom furniture. Yen exerts 25 N of force to push the foot-end of the bed while her friend exerts 20 N of force pulling the head-end of the bed. What net force is being used to move the bed?

• A. 25N• B. 45 N forward• C. 5 N forward• D. 20 N forward

Bellringer 12-7

• What is the resultant net force of a force of 7N north is combined with a force of 5N south?

• A. 12 N• B. 12 N south• C. 12 N north• D. 2 N north

Bellringer 13-7

• A man applies a force of 500 N to push a truck 10 m down the street. How much work has been done?

• A. 500 J• B. 5000J• C. 50 J• D. 50000J

Bellringer 14-7

• Carl rides his bike north for 100 m at a constant speed of 5 m/s. What is his acceleration?

• A. 500 m/s• B. 20 m/s• C. 5000 m/s• D. there is no acceleration

Bellringer 15-7

• A 20.0 N force is used to push a cart a distance of 5.0 meters. How much work is done on the cart?

• A. 4 J• B. 100 J• C. 50 J• D. 10 J

Bellringer 16-7

• Two children with the same mass face one another while standing on their skateboards. If they place their hands palm to palm and skateboarder #1 pushes as hard as he can, what will be the result?

• A. Both will move toward the east• B. Both will move toward the west• C. Both will roll• D. Neither will move

Bellringer 17-7

• Given four objects massing 4 kg, 2 kg, 6000g, and 1500 g. Which object will have more inertia than a 5 kg object?

• A. 6000g• B. 100 g• C. 2 Kg• D. 2000g

Bellringer 18-7

• A ball is dropped from a rooftop. What is the balls’ velocity after 3 seconds. Assume there is no air resistance.

• A. 9.8 m/s• B. 29.4 m/s• C. 294 m/s• D. 3m/s

Bellringer 19-7

• An apple falls from a tree. The gravitational force on the apple is 1N. If air resistance is 0.1N, what is the net force on the apple?

• A. 1N• B. 1.1 N• C. 0.9 N• D. 0 N

Bellringer 20-7

• How much power does a person weighing 500 N need to climb a 3 M ladder in 5 sec?

• A. 1500 w• B. 500 w• C. 300 w• D. 30 w

Bellringer 21-7

• Classify this device: a slanted surface used to raise an object.

• A. screw• B. inclined plane• C. wedge• D. lever

Bellringer 22-7

• Classify this device: an object that does work with only one movement and changes the size or direction of a force.

• A. compound machine• B. lever• C. simple machine• D. pulley

Bellringer 23-7

• Classify this device: a bar that is free to pivot about a fixed point.

• A. screw• B. inclined plane• C. lever• D. pully

Bellringer 24-7

• How should one classify an inclined plane wrapped around a cylindrical post?

• A. screw• B. lever• C. inclined plane• D. pulley

Bellringer 25-7

• Classify this device: two or more simple machines working together.

• A. simple machine• B. compound machine• C. triple machine• D. poly machine

Bellringer 26-7

• A man expends 100 J of work to move a box up an inclined plane. The amount of work produced is 70J. Calculate the efficiency of the inclined plane.

• A. 100%• B. 70%• C. 50%• D. 25%

Bellringer 27-7

• A boy pushes a lever 2 meters downward, and a box on the other end of the lever moves upward 2.5 meters. The boy uses 75 Newtons to raise the 50 Newton box. Calculate the efficiency of the lever.

• A. 100% • B. 2.5%• C. 83.3%• D. 65%

Bellringer 28-7

• Classify this device: an arrangement of pulleys designed to reduce the amount of effort force required.

• A. wedge• B. block and tackle• C. harness• D. rings

Bellringer 29-7

• A ramp is classified as what type of simple machine?

• A. wedge• B. screw• C. inclined plane• D. pulley

Bellringer 30-8

• What actions are most likely increase the kinetic energy of an object?

• A. cut it in half• B. increase the mass and velocity• C. decrease the mass and velocity• D. all of the above

Bellringer 31-8

• Joe is jumping on a trampoline. What is his energy level at the top of his jump?

• A. maximum kinetic• B. maximum potential• C. minimum kinetic• D. minimum potential

Bellringer 32-8

• Which of these vehicles has the most kinetic energy? A large truck traveling at 30 m/s , a small car traveling at 30 m/s, a minivan traveling at 45 m/s or a bicycle traveling

10 m/s? a. a minivan traveling at 45 m/sb. A large truck traveling at 30 m/sc. A small car traveling at 30 m/sd. A bicycle traveling at 10 m/s

Bellringer 33-8

• Which of these vehicles has the LEAST kinetic energy? A large truck traveling 50 m/s, a small car traveling 30 m/s, a minivan traveling 45 m/s or a bicycle traveling 10 m/s?

• A. a large truck traveling 50 m/s• B. a bicycle traveling 10 m/s• C. a minivan traveling 45 m/s • D. a small car traveling 30 m/s

Bellringer 34-8

• What kind of energy would a stretched rubber band most closely model?

• A. kinetic energy• B. potential energy• C. heat energy• D. nuclear energy

Bellringer 35-8

• What happens in the amount and kind of energy when a pendulum swings in a downward direction?

• A. potential goes to kinetic• B. kinetic becomes potential• C. no energy change• D. it stops

Bellringer 36-8

• A cart traveling on a roller coaster has both potential and kinetic energy. Where will the cart have the greatest potential energy?

• A. bottom of first hill• B. top of tallest hill• C. top of first hill• D. top of the last hill

Bellringer 37-8

• The cart is traveling forward on a roller coaster. At what point will the cart have the greatest kinetic energy?

• A. top of the tallest hill• B. bottom of the tallest hill• C. top of the middle hill• D. bottom of the last hill

Bellringer 38-8

• Consider a man winding his pocket watch. Classify the energy he is storing in the watch spring.

• A. potential energy• B. kinetic energy• C. elastic potential energy• D. elastic kinetic energy

Bellringer 39-8

• Choose the best description of kinetic and potential energy.

• A. Kinetic is energy of position and potential is movement

• B. Kinetic is static and so is potential• C. Kinetic is energy of movement and potential

is energy of position• D. none of these are descriptions of energy

Bellringer 40-8

• If the speed of an object is changed, what effect will that have on the object’s potential energy?

• A. It will increase• B. It will decrease• C. It will double• D. It will not be affected

Bellringer 41-8

• A sample of water is at 1 degree C. Energy is removed from the sample. What type of change will occur with the water sample?

• A. it will heat up• B. it will cool down• C. it will loose volume• D. it will not change

Bellringer 42-8

• What happens to the particles of matter inside of a substance when that substance loses or absorbs energy?

• A. the speed of the particles will not change• B. it shrinks• C. the speed of the particles always change• D. it gets hot

Bellringer 43-8

• What type of process will a substance undergo if it absorbs energy?

• A. exothermic• B. endothermic• C. it swells• D. is shrinks

Bellringer 44-8

• A solid is at its melting point. The substance absorbs additional energy. What will happen to the substance?

• A. the particles of the substance will increase motion in the solid

• B. the particles of the substance will decrease motion in the solid

• C. it will glow in the dark• D. Nothing will occur

Bellringer 45-8

• Alex wants to change the state of matter in a sample he has on the lab table. What will Alex have to do to the sample to change its’ state?

• A. cool it down• B. change its’ energy• C. heat it up• D. nothing will change the matters’ state

Bellringer 46-8

• A liquid becomes a gas. What molecular changes must have occurred for this change to happen?

• A. it heats up• B. it cools down.• C. it compresses• D. the molecules move further apart

Bellringer 47-8

• To what is a high temperature in a substance most closely related?

• A. high potential energy• B. high kinetic energy• C. low potential energy• D. low kinetic energy

Bellringer 48-8

• Through which states of matter is convection of thermal energy most likely to occur?

• A. liquids and gasses• B. liquids and solids• C. solids, liquids and gasses• D. only solids

Bellringer 49-8

• If the coffee in a large cup is placed in the microwave oven for 2 minutes, what is most the likely cause for the increase in temperature of the coffee?

• A. decrease in potential energy• B. increase in potential energy• C. increase in kinetic energy• D. decrease in kinetic energy

Bellringer 50-8

• What property or characteristic of matter must be present for a wave to travel through that matter?

• A. light• B. energy• C. liquid• D. gas

Bellringer 51-9

• What property or characteristic must be present for a wave to be able to travel?

• A. solid• B. Energy• C. Liquid• D. Gas

Bellringer 52-9

• What type of a wave is created by squeezing together the coils of a spring and then releasing the coils?

• A. transverse waves• B. compressional waves• C. longitudinal waves• D. Both B and C are correct

Bellringer 53-9

In what kind of wave do the particles of the waves’ medium move only in the same direction as the motion of the wave?

a. Compressionalb. Longitudinalc. Transversed. Both A and B describe the wave

Bellringer 54-9

• Wave A and Wave B have the same wavelength. Wave A carries more energy than Wave B. What characteristic of wave A is MOST likely responsible for its higher energy level?

• A. frequency• B. strength• C. amplitude• D. loudness

Bellringer 55-9

• What kind of waves are sound waves?

a. Transverseb. Compressional/longitudinalc. Short and high energyd. They are not waves

Bellringer 56-9

• Electromagnetic waves can travel through many media. To what type of wave are they most closely related ?

• A. longitudinal• B. transverse• C. sound• D. microwaves

Bellringer 57-9

• Two electromagnetic waves have the same amplitude, but one carries more energy than the other. What characteristic of the waves is different from each other?

• A. frequency• B. strength• C. length• D. height

Bellringer 58-9

• What kind of force can transfer energy from one place to another?

• A. wave• B. blast• C. laser beam• D. microwave

Bellringer 59-9

• What type of wave moves the particles of the material through which it travels move at right angles to the motion of the wave?

• A. longitudinal• B. transverse• C. compressional• D. microwave

Bellringer 60-9

• What type of electromagnetic wave has the shortest wavelength?

• A. radio wave• B. x-ray• C. gamma ray• D. microwave

Bellringer 61-9

• Four types of waves have the same amplitude and pass through a substance. Which type of wave transfers the LEAST energy through the substance?

• A. ultraviolet• B. light• C. microwave• D. sound wave

Bellringer 62-9

• Four types of waves which have the same amplitude pass through a substance. Which type of wave transfers the MOST energy to the substance?

• A. ultraviolet• B. light• C. microwave• D. sound

Bellringer 63-9COS 10-1

• How do the speed of light and the speed of sound compare to each other?

• A. the speed of sound is faster• B. the speed of light is faster• C. the speed of sound is slower• D. the speed of sound is faster


• Which kind of instrument would have the following characteristics: a current carrying coil of wire wrapped around an iron core?

• A. a battery• B. a radio receiver• C. an electromagnet• D. a night light


• Which situation describes what happens when a wire is passed through a magnetic field?

• A. an electric current is formed• B. it sparks• C. it plays music• D. nothing


• What is the name of the process involved in making a current flow when the electric current is produced from the motion of a conductor in a magnetic field?

• A. induction• B. transduction• C. rotational energy• D. conduction

Bellringer 67-10

• What observation or rule can you use to describe what happens to magnetic poles with different charges?

• A. opposites attract, opposite charges attract• B. opposites are repulsive• C. likes attract, like charges attract• D. likes are repulsive

Bellringer 68 COS 6-1

• What does the size of the gravitational force between two objects depend upon ?

• A. mass of the object• B. distance between them• C. both the mass and distance• D. none of these


• What happens to your weight as you get farther from the center of the earth?

• A. it decreases• B. it increases• C. it stays the same• D. it doubles


• What happens to the gravitational force between two objects if the mass of one of the objects is increased?

• A. it decreases• B. it stays the same• C. it increases• D. it doubles


• What happens to the gravitational force between two objects if the distance between them is decreased?

• A. it increases• B. it decreases• C. it stays the same• D. it doubles


• What happens to the gravitational force between two objects if the distance between them is increased?

• A. it increases• B. it decreases• C. it stays the same• D. it doubles


• What types of objects experience gravitational forces?

• A. only solid matter• B. all matter• C. only solids and liquids• D. only non radioactive matter


• What types of objects on earth experience the greatest gravitational force between them?

• A. those far away from each other• B. those attached to the magnetic poles• C. those closest together• D. they all fly away


• Which objects experience the least gravitational force between them on the earth?

• A. those which are closest together• B. Those who are attached at the magnetic

poles• C. those which are farthest apart• D. they all fly away


• Protons are positively charged particles. Since like charges repel each other, what force prevents the protons in a nucleus of an atom from repelling each other and scattering?

• A. strong nuclear force• B. weak nuclear force• C. the electrons won’t let them out• D. the neutrons are attached to them in the

nucleus


• Which of the following particles would repel one another?

• A. Protons and protons• B. Protons and neutrons• C. Protons and electrons• D. electrons and neutrons


• Which of the following particles would attract one another?

• A. protons and protons• B. protons and electrons• C. protons and neutrons• D. electrons and neutrons


• What type of force is involved in the process of nuclear decay?

• A. strong nuclear forces• B. weak nuclear forces• C. the electrons won’t let them out• D. the neutrons


• What is the name given to two atoms of the same element that have different numbers of neutrons, but same number of protons and electrons?

• A. brothers• B. isotopes• C. isomer• D. radioactive


• Which radioactive particle or emission can be stopped by a common piece of paper or even a piece of card stock?

• A. alpha particle• B. beta particle• C. gamma ray• D. x ray


• Which type of radioactive particles is considered the least penetrating ?

• A. alpha particle• B. beta particle• C. gamma ray• D. x ray


• Which type of radiation is considered the most penetrating and the most dangerous?

• A. alpha particles• B. beta particles• C. gamma rays• D. x rays


• What event occurs when the strong nuclear force is not sufficient to hold unstable nuclei together?

• A. the nuclei fuse together• B. the nuclei decay • C. the nuclei find other types of radiation• D. the nuclei burn up

Bellringer 85 COS11-6

• Identify the following nuclear process: The nuclei having low masses are united to form nuclei with larger masses ( often occurs on the sun)

• A. fission• B. fusion• C. decay• D. formation of antimatter

Bellringer 86 COS 11- 7

• Which of the following is correct for arrangement of the types of nuclear radiation in increasing order of penetrating power?

• A. alpha, gamma, delta• B. alpha, delta, beta• C. alpha, beta, gamma• D. delta, omega, gamma


• Which of the following situations describes both a fusion reaction and a fission reaction?

• A. they make bigger particles• B. they make smaller particles• C. they use up energy• D. they give off energy


• Which of the radioactive particles has neither charge or mass?

• A. alpha particles• B. beta particles• C. gamma rays• D. x rays


• Which of the radioactive particles is best described by: a negatively charged particle that is emitted at a high speed from a nucleus?

• A. alpha particles• B. beta particles• C. gamma rays.• D. x rays


• Which of the following statements about nuclear fusion is considered true?

• A. fusion is the joining of the nuclei of atoms• B. fusion is the splitting of the nuclei of atoms• C. fusion is the stripping of the electrons from

an atom• D. fusion is not helpful or harmful


• Classify the following process in which large nuclei are split into smaller pieces.

• A. nuclear fusion• B. nuclear fission• C. building synthetic elements in the lab• D. nuclear chopping


• What can be done to increase the magnetic field of an electromagnet?

• A. increase the loops of wire• B. increase the current• C. increase both the loops of wire and the

current• D. shorten the column


• What is the difference between static electricity discharge and an electric current?

• A. static discharge can not be felt• B. electric current is permanent• C. static discharge lasts for only seconds• D. electric current lasts for only seconds


• How is a permanent magnet different from an electromagnent?

• A. a permanent magnet can not be turned off• B. an electromagnet can not be turned off• C. a permanent magnent can be turned off• D. an electromagnent is permanent


• If a wire is in an electromagnetic field, what will the wire have to be doing to create a current?

• A. standing still• B. moving through the field• C. making circles• D. dancing


• How and when does an electromagnet produce an electromagnetic field?

• A. it is always on• B. only when a current is applied to it• C. it doesn’t• D. when it does the loop to loop


• Four electromagnets have the same electric current passing through them. One with 50 loops, one with 200 loops, one with 750 loops and one with 1000 loops. Which magnet will produce the strongest magnetic field?

• A. 50 loops• B. 200 loops• C. 750 loops• D. 1000 loops


• What is a complete path through which electric charges can flow?

• A. a conductor• B. a resistor• C. an electric circuit• D. a breaker


• Which of the following materials will make a good insulator?

• A. iron• B. silver• C. rubber • D. plastic


• Which of the following objects would be considered a good conductor of electricity?

• A. rubber• B. wood• C. plastic• D. iron


• Which of the following objects will have the least resistance: a 5 cm diameter wire, a 15 cm diameter wire, a 20 cm diameter wire or a 25 cm diameter wire?

• A. 5cm wire• B. 15 cm wire• C. 20 cm wire• D. 25 cm wire


• Which of the following objects has the least resistance: a 5 cm long wire, a 15 cm long wire, a 20 cm long wire or a 25 cm long wire?

• A. 5 cm long wire• B. 15 cm long wire• C. 20 cm long wire• D. 25 cm long wire


• Which of the following wires has the lowest resistance: a short thick copper wire, a long thin copper wire, a long thick copper wire, a short thin copper wire ?

• A. a short thick copper wire• B. a long thin copper wire• C. a long thick copper wire• D. a short thin copper wire


• Which of the following is a conductor of electricity: air, glass, water, or wood?

• A. air• B. glass• C. water• D. wood


• A flashlight bulb has a potential difference of 4.5 V and a resistance of 8.0 ohms. Calculate the current flowing through the filament.

• A. 0.56 A• B. 1.78A• C. 2.4 A• D. 0.056 A


• How much current flows through a 2.0 ohm wire with a voltage of 12.0 V ?

• A. 3.0 A• B. 6.0 A• C. 0.166 A• D. 0.0166 A


• A light bulb has a resistance of 240 ohms when operating at 120 V. Calculate the current flowing through the light bulb.

• A. 2 A• B. 0.5 A• C. 5 A• D. 2.5 A


• Two resistors with values of 4.0 ohms and 6.0 ohms are connected in parallel. Calculate their equivalent total resistance.

• A. less than 4.0 ohms• B. less than 6.0 ohms• C. less than 10 ohms• D. 2 ohms


• Two resistors with values of 6.0 ohms and 6.0 ohms are connected in parallel. Calculate

their equivalent total resistance.

a. Less than 0 ohmsb. Less than 6.0 ohmsc. Less than 12.0 ohmsd. Less than 3 ohms


• Three resistors with values of 4.0 ohms, 6.0 ohms, and 8.0 ohms respectively are connected in series. Calculate their equivalent total resistance.

• A. 10 ohms• B. 18 ohms• C. 2 ohms• D. 100 ohms


• What is the SI unit for resistance in electric circuits?

• A. ampers• B. ohms• C. watts• D. newtons


• A bulb has a voltage of 9.0 volts and a current of 0.3 amps passing through it. Using Ohms’ Law, calculate the resistance of the bulbs’ filament.

• A. 30 ohms• B. 27 ohms• C. 9 ohms• D. 3 ohms


• Examining two wires which have the same length but have different diameters, which of the wires would have the greatest resistance.

• A. the skinny one• B. the fat one• C. the long one• D. the one with the smallest diameter


• Resistance in an electrical wire can cause some of the electrical energy in a wire to be converted to what energy form?

• A. potential• B. thermal• C. kinetic.• D. resistance

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Bell Ringers with EQT Questions Second Semester Physical Science With Answers