Question 1

The pickup truck has unbalanced forces acting on it because

Accepted Answer

the truck is going around a curve

Answer

all the vehicles are not moving

Answer

all the vehicles are going the same speed

Question 2

A graph of this data will most likely look like

Accepted Answer

D

Answer

B

Answer

A

Answer

C

Question 3

Which of the following graphs best represents the car's motion during the 5-minute period?

Accepted Answer

F

Answer

G

Answer

H

Answer

J

Question 4

Describe Rachel's motion at 9 minutes.

Accepted Answer

She stopped running.

Answer

She started running.

Answer

She is running fast.

Answer

She was running slow.

Question 5

A change in velocity (speeds up, slows down or changes direction), is known as	     .

Accepted Answer

acceleration

Answer

velocity

Answer

average speed

Answer

momentum

Question 6

How long after Kathy started jogging did Rachel begin jogging?

Accepted Answer

2 min

Answer

10 min

Answer

7 min

Answer

4 min

Question 7

What two variables are plotted in the graph?

Accepted Answer

distance and time

Answer

time and speed

Answer

distance and velocity

Answer

distance and speed

Question 8

A horizontal line on a distance-time motion graph indicates ____________________

Accepted Answer

at rest

Answer

constant speed.

Answer

accelerating

Question 9

A diagonal line on a distance time graph means what?

Accepted Answer

constant speed

Answer

stopped

Answer

accelerating

Question 10

A curved line on this distance time graph

Accepted Answer

speeding up

Answer

slowing down

Answer

stop

Question 11

What does a curved line going toward a stop mean on a distance time graph?

Accepted Answer

slowing down

Answer

speeding up

Answer

stopped

Question 12

In the picture below, a girl is trying to pull a dog on a leash, but the dog and the girl are moving in the same direction.  Which of the following best describes the forces in this situation?

Accepted Answer

The forces are unbalanced, and the dog’s force is greater

Answer

The forces are balanced, and the dog is stronger than the girl.

Answer

The forces are balanced, and the net force is zero.

Answer

The forces are unbalanced and the girl’s force is greater.

Question 13

Calculate the speed from the information in the graph above.

Accepted Answer

60 km/h

Answer

5 hr

Answer

300 km

Question 14

Calculate the speed from the information in the graph above.

Accepted Answer

5 m/s

Answer

100 m

Answer

20 s

Question 15

What is the student's average speed in km/h?

Accepted Answer

4 km/h

Answer

60 km/min

Answer

15km/h

Question 16

A student travels 90 km in 180 min.  What is the student's average speed in km/hr?

Accepted Answer

30 km/hr

Answer

20 km/min

Answer

16,200 km/hr

Question 17

A teacher puts a fan in front of a paper airplane that is flying through the air at a constant speed of 10 m/s.   The teacher turns the fan on and the wind moves in the opposite direction of the airplane. The causes air resistance to occur. What will happen to the paper airplane once the wind hits it?

Accepted Answer

The paper airplane will slow down.

Answer

The paper airplane continues flying at a constant speed.

Answer

The paper airplane will move faster.

Question 18

What is the average speed of the car rolling to the end of the hill where it stops a total distance of 120 meters?

Accepted Answer

24 m/min

Answer

15 m/min

Answer

10 m/min

Question 19

Use the graph to calculate the average speed of Driver 4. What is his speed?

Accepted Answer

7 m/s

Answer

18.2 m/s

Answer

22.2 m/s

Answer

12.5 m/s

Question 20

The drawing shows a person playing pool. There are three balls on the table. Identify the point in the diagram that shows an example of unbalanced forces.

Accepted Answer

the ball at point 2

Answer

the student at point 4

Answer

the table at point 3

Question 21

The distances two sea turtles swam over a period of six days were tracked and plotted on a line chart. Which turtle swam at a faster average speed? How much faster?

Accepted Answer

Green sea turtle; 6 km/day

Answer

Green sea turtle; 16km/day

Answer

Ridley's sea turtle; 10km/day

Question 22

Postion O shows

Accepted Answer

acceleration (speeding up)

Answer

deceleration (slowing down)

Answer

constant speed

Question 23

Position A represents

Accepted Answer

A person driving at a constant speed.

Answer

A person decelerating (slowing down)

Answer

A person accelerating (speeding up)

Question 24

Position B indicates

Accepted Answer

The person on the bike is decelerating (slowing down)

Answer

The person on the bike is going at a constant speed.

Answer

The person on the bike is accelerating (speeding up)

Question 25

A ramp makes it easier to move a heavy object over a certain distance.  Which of the following statements explains how?

Accepted Answer

It decreases the amount of force required to move the object.

Answer

It decreases the distance the object travels

Answer

It decreases the amount of work required to move the object.

Question 26

Which of the following statements best describes the situations?

Accepted Answer

Less force will be needed to move the box in Situation 2.

Answer

Less force will be need to move the box in situation 1.

Answer

It will take the same about of force to move both boxes.

Answer

More force will be needed to move the box in Situation 2.

Question 27

If you need to move furniture into a van, why would it be easier to use an inclined plane than to just lift the furniture into the van?

Accepted Answer

The inclined plane decreases the amount of force needed to move the furniture.

Answer

The inclined plane decreases the force of gravity that needs to be overcome.

Answer

The inclined plane decreases the amount of friction present.

Answer

The inclined plane decreases the weight of the furniture.

Question 28

Which of the following is a reasonable conclusion you can make from the data in the chart?

Accepted Answer

Simple machine allows us to use less force when doing work.

Answer

Spring scales should always be used to lift bricks.

Answer

the simple machine allows us to use more force when doing work.

Answer

The simple machine allows us to use more force when doing work.

Question 29

Which type of simple machine is in the picture below?

Accepted Answer

inclined plane

Answer

lever

Answer

pulley

Question 30

A inclined plane is considered a simple machine because-

Accepted Answer

it reduces the amount of force needed to move an object.

Answer

it changes the weight of the object being moved.

Answer

it changes the direction of the force.

Question 31

An inclined plane reduces the amount of force needed to move an object by

Accepted Answer

A

Answer

C

Answer

B

Answer

D

Question 32

What is a disadvantage of using an inclined plane to lift a heavy object?

Accepted Answer

A

Answer

D

Answer

C

Answer

B

Question 33

Which change in the experimental set up would require more force to pull the block up the inclined plane?

Accepted Answer

D

Answer

B

Answer

A

Answer

C

Question 34

Which of the following correctly identifies a precipitate in a chemical reaction?

Accepted Answer

Two substances react in solution, forming a new substance which is a solid

Answer

Two substances are separated using an electrical current

Answer

A substance decreases in volume

Answer

Water condenses to form rain

Question 35

Which substance most likely caused a new substance (chemical change) to form when mixed with water?

Accepted Answer

Substance 2

Answer

Substance 3

Answer

Substance 4

Answer

Substance 1

Question 36

What evidence proves that a new substance formed with new properties?

Accepted Answer

bubbles form

Answer

the tablet dissolved in water

Answer

the water level goes up when you put in the Alkaseltzer

Question 37

What observation from the data would help you decide what kind of change has occurred?

Accepted Answer

change in color and change in temperature

Answer

change in color, precipitate formed, and change in temperature.

Answer

Change in color only

Question 38

A student mixed Miracle Gro, a blue powder, with water. The student stuck a thermometer in and noticed that the temperature started to rapidly go down. This is evidence of what kind of chemical change?

Accepted Answer

Change in temperature

Answer

Production of a precipitate

Answer

Dissolving

Answer

Production of a gas

Question 39

Position A on the roller coaster is

Accepted Answer

maximum potential energy

Answer

potential energy is equal to kinetic energy

Answer

maximum kinetic energy

Question 40

Position B on the roller coaster is

Accepted Answer

potential equals kinetic energy 50%

Answer

maximum potential

Answer

maximum kinetic

Question 41

Which student correctly identified the activities?

Accepted Answer

J

Answer

H

Answer

G

Answer

F

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