CFE Review Standard

which force produces a change in motion?

• unbalanced force
• balanced force
• gravitational force
• frictional force

What is the difference between mass and weight?

• mass is how much matter is in an object, and weight is the gravitational pull on that object
• mass and weight are the same
• weight affects how much mass is in an object
• weight is determined by how many atoms make up an object

Which example shows NO acceleration?

• going straight at a constant speed
• going straight while slowing down
• speeding up
• circling at at constant speed

What do you need to measure to find the speed of a moving car?

• distance and time
• speed and direction
• direction and time
• distance and momentum

How is gravity affected by mass?

• the larger the mass of the object, the greater the gravity
• small objects have no gravity
• gravity is not affected by mass of objects, whether large or small

James and Alex are kicking a ball back and forth. Alex kicks the ball in James’s direction, but the ball stops just before it reaches James. Which most likely caused the ball to stop?

• friction
• gravity
• change in mass of the ball
• change in shape of the ball

During which interval is the object slowing down?

• A to B
• D to E
• E to F
• G to H

What happens when you increase the amplitude of a sound?

• it makes the sound louder
• it makes the sound travel faster
• it increases the wavelength of the sound
• it increases the frequency of the sound

What is frequency?

• any disturbance that transmits energy through a medium
• the distance from any point on a wave to an identical point on the next wave
• the number of waves produced in a given amount of time
• when the particles in a longitudinal wave are spread apart

High frequency waves have _________ wavelength.

• varying
• high
• the same
• low