Review: Physics 1st Term. Question 1: Which of these units are basic SI- units? a.inch b.ampere...

Review: Physics

1st Term

Question 1:

Which of these units are basic SI-units?

a. inch

b. ampere

c. volt

d. minute

Question 2:

The SI-unit of temperature is…

a. Fahrenheit

b. Kelvin

c. Degree Celsius

d. Degree

Question 3:

0,04 g converted into kg are…

a. 40 kg

b. 0,4 kg

c. 40 000 kg

d. 0,00004 kg

Question 4:

Which of these prefixes is the smallest?

a. milli-

b. nano-

c. giga-

d. pico-

Question 5:

What does the prefix „micro“ mean?

a. One millionth

b. One million

c. One thousandth

d. One thousand

Question 6:

What is the SI-unit for speed/velocity?

a. Light year

b. Miles per hour

c. km/h

d. m/s

Question 7:

What is the SI-unit for acceleration?

a. m/s

b. m

c. m/s²

d. m²/s²

Question 8:

What is the symbol of acceleration?

a) „a“

b) „v“

c) „g“

d) „s“

Question 9:

Which of these actions does not involve acceleration?

a. Going into a curve

b. Free fall

c. Being stationary

d. Stopping your car

Question 10:

If you increase C in the formula below,

a. A will increase automatically.

b. A will decrease automatically.

c. A will increase, if B and D

stay the same.

d. A will decrease, if B and D

stay the same.

Question 11:

Which of these quantities are directly proportional to each other?

a. A and B

b. A and C

c. A and D

d. B and D

Question 12:

The smallest particles known in the atomic nucleus are called…

a. protons

b. electrons

c. quarks

d. photons

Question 13:

Which of these particles is smallest?

a. electron

b. molecule

c. proton

d. atom

Question 14:

3.45 x 10-4 is equal to

a. 0.0345

b. 3450

c. 0.0000345

d. 345000

Question 15:

123 000 is equal to

a) 1.23 x 105

b) 1.23 x 10-5

c) 12.3 x 104

d) 12.3 x 10-6

Question 16:

The density of ice is…

a. greater than that of

water.

b. less than that of water.

c. equal to that of water.

Question 17:

What is the acceleration of free fall close to the Earth‘s surface?

a. 9,81 m/s

b. ~10 m/s²

c. 3,5 m

d. ~ 20 m/s

Question 18:

If there is no resulting force acting on a body,

a. it must be at rest.

b. it is weightless.

c. it moves at constant

speed.

d. It decelerates.

Question 19:

No fundamental force is…

a. the spring force.

b. gravity.

c. the nuclear force.

d. the electromagnetic

force.

Question 20:

A physical quantity that is conserved in a closed system is…

a. momentum

b. energy

c. electric charge

d. mass

Question 21:

A renewable energy resource is…

a. coal

b. wood

c. oil

d. gas

Question 22:

Which of the following gases is NOT a greenhouse gas?

a. methane

b. oxygen

c. CFCs

d. carbon dioxide

Question 24:

If a car travels at a speed twice as great as before, its kinetic energy…

a. is four times as great as

before.

b. is twice as great as before.

c. is half as great as before.

d. is quarter as great as before.

Question 25:

What motion does an astronaut in an orbit represent?

a. He/She does not move at all

because he/she is weightless.

b. He/She „falls around the Earth“.

c. He/She is equally attracted by

the Moon and the Earth.

d. An accelerated motion.

CONGRATULATIONS !!!!!