Chapter 2 B Investigating Motion

32 Questions | By Matwater | Updated: Mar 20, 2022 | Attempts: 275

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1.

The amount of matter in an object is its
- A.
  
  Weight
- B.
  
  Mass
- C.
  
  Volume
- D.
  
  Area
2.

If a planet has more gravity than earth, its mass is
- A.
  
  Less than earth's mass
- B.
  
  The same as earth's mass
- C.
  
  More than earth's mass
3.

The farther away you get from earth, the less you feel the effect of its gravity.
- A.
  
  True
- B.
  
  False
4.

What causes an object to accelerate as it approaches the earth?
- A.
  
  Friction
- B.
  
  Gravity
5.

Acceleration occurs when an object
- A.
  
  Goes faster
- B.
  
  Slows down
- C.
  
  Keeps a constant speed
- D.
  
  Changes direction
6.

Friction can be reduced by adding
- A.
  
  Sand
- B.
  
  Oil
- C.
  
  Wax
- D.
  
  Wheels
7.

The force of friction moves in the same direction as the motion of an object.
- A.
  
  True
- B.
  
  False
8.

The force that resists the movement of one surface past another surface is
- A.
  
  Gravity
- B.
  
  A push
- C.
  
  A pull
- D.
  
  Friction
9.

Fingerprints help you pick up a glass by
- A.
  
  Increasing friction between your skin and the glass
- B.
  
  Decreasing friction between your skin and the glass
10.

Friction caused by gas molecules in the atmosphere hitting an object and slowing it down is called
- A.
  
  Streamlining
- B.
  
  Air resistance
11.

Some ways to streamline an object are to have
- A.
  
  Rounded edges
- B.
  
  less surface in the direction of motion
- C.
  
  A large flat area in the front
12.

A meteorite burns up as it enters our atmosphere because of friction.
- A.
  
  True
- B.
  
  False
13.

What is the speed of a car that travels 120 miles in 4 hours?
- A.
  
  60 miles per hour
- B.
  
  30 kilometers per hour
- C.
  
  30 miles per hour
- D.
  
  60 kilometers per hour
14.

Forces act in pairs.
- A.
  
  True
- B.
  
  False
15.

The opposing force to an action force is
- A.
  
  A reaction force
- B.
  
  A reverse force
16.

What makes an object move or stop?
- A.
  
  Acceleration
- B.
  
  Inertia
- C.
  
  Force
17.

When riding a skateboard, when you push your foot backwards against the floor, the skateboard
- A.
  
  Moves backward
- B.
  
  Moves forward
- C.
  
  Stays in place
18.

The tendency of an object to stay still if it is at rest or to keep moving if it is moving is called
- A.
  
  Gravity
- B.
  
  Air resistance
- C.
  
  Inertia
- D.
  
  Acceleration
19.

If you run at a speed of 5 mph, how far would you run in 3 hours?
- A.
  
  3 miles
- B.
  
  15 miles
- C.
  
  2 miles
- D.
  
  8 miles
20.

Changing direction when you are moving changes your
- A.
  
  Speed
- B.
  
  Time
- C.
  
  Gravity
- D.
  
  Velocity
21.

The formula for speed is
- A.
  
  Distance X time
- B.
  
  Distance / time
- C.
  
  Length X width
22.

The force that allows a parachute to fall safely to the ground is
- A.
  
  Gravity
- B.
  
  Air resistance
- C.
  
  Streamlining
23.

Objects of different masses pull on each other equally, and the object with less mass
- A.
  
  Moves toward the other object
- B.
  
  Moves away from the other object
- C.
  
  Stays still
24.

An object's weight
- A.
  
  Is the same wherever it is.
- B.
  
  Changes when gravity changes.
25.

If your mom puts her car on cruise control and travels at a constant speed of 65 mph, her acceleration is
- A.
  
  Increasing
- B.
  
  Decreasing
- C.
  
  Zero