Quarter 1 Test Review

• If you are calculating the change in velocity during a certain time period, you are calculating?

acceleration

• ____________is when an object’s distance from another object is changing.

motion

Which is not a vector?

• 1. acceleration• 2. speed• 3. velocity• 4. time• 5. distance• 6. displacement

• Speed• Time• Distance

• ______________is a place or object used to tell if another object is moving.

Frame of reference

• Give 3 units for distance.

• Meters, centimeters, decameters

• What is the SI unit for liquid volume?

liters

• The SI, International system of Measurement is a system of measurement used everywhere except?

• Everywhere except U.S.

• What two measurements are needed to find speed?

• Distance and time

What is the formula for speed?

Speed = distance/time

• A speed that is used by police officers to detect how fast you are moving is called_______ __________.

Constant speed

_____is a speed that is the total distance divided by total time.

Average speed

• If the speed of an object does not change you are traveling at a __________ ___________.

Constant speed

• Daniel and Paiten are riding their mopeds together. They are traveling 10 miles to go see his Grandmother. It takes them 2 hours to get there. How fast are they going?

5 mi/hr

• Dalton is a marathon runner. If he moves at a constant speed in the same direction for 1 hour, which of the following is true?

• A. He changed speed during the hour.• B. His velocity did not change.• C. He accelerated during the hour.• D. He is in good shape.

B. His velocity did not change.

• If you know Josh jogged 20 kilometers in 6 hours on a highway headed west, you can calculate his_______________.

Average velocity

Which two variables do you need to place on a graph to show motion of a car?

• Time and distance

You would place the _________variable on the X axis of a line graph.

Manipulated or independent

• In graphing motion, what do you know about the runner with the steepest slope?

• He is the fastest.

• On a graph showing distance verses time, a horizontal line tells you what?

• The object is sitting still.

• Convert 3 kilometers to hectameters.

30

Convert 140 grams to ounces.

5 ounces

Convert 224 grams to ounces.

8 ounces

Jamin has a cat that weighs 15 kg. How many pounds does he weigh?

33 lbs

What is a conversion factor?

• A fraction that is equal to the number one that is used to convert from one unit to another.

Change 67 000 000 000 to scientific notation.

6.7 x 1010

• The rate at which velocity changes is called?

acceleration

How many Sig. Figs. ?

• 0.00003450

4

How many Sig. Figs.?

• 7000

1

How many Sig. Figs.?

8990.

4

• Give an example of deceleration.

Slowing down

• Why is the Earth always accelerating?

• Because it is always traveling in a path in which it changes direction.

• Jamie walks north 3 blocks, then turns west and walks 3 blocks. Then she turns south and walks 3 blocks. 1. What would be her displacement?

• 2. What distance did she walk?• Be specific.

• Displacement is 3 blocks west.• Distance is 9 blocks.

• On an acceleration graph showing speed vs. time, a straight horizontal line would tell you what?

constant