Energy Pretest

Jacob noticed that when he opened his bedroom door, the door hit the wall. He decided to design something to absorb the energy of the door so that it does not damage the wall. Which solution would be best?

• a spring

• a pencil

• a glass

• a fork

Which sentence describes a relationship between energy and motion?

• Energy and motion are not related.

• Objects that are not moving do not have energy.

• The more energy an object has, the faster it is moving.

• The more energy an object has, the slower it is moving.

Which car has the greatest energy?

• a car that travels 140 kilometers in 1 hour

• a car that travels 160 kilometers in 1 hour

• a car that travels 180 kilometers in 1 hour

• a car that travels 250 kilometers in 1 hour

A light bulb converts electrical energy into which of these?

• heat only

• light only

• heat and light

• light and motion

Nell investigates the motion of a ball. She uses a rubber band wrapped around the legs of a chair to launch the ball. She discovers that the farther she pulls back with the rubber band, the faster the ball will travel. Which conclusion should Nell draw?

• Increasing the pull on an object will increase its speed.

• Increasing the weight of an object will increase its speed.

• Increasing the distance an object travels will increase its speed.

• Increasing the energy applied to an object will increase its speed.

A ball is rolling. What kind of energy does it have?

• heat

• light

• sound

• motion

Sarah tapes a dowel onto a desk. Then she puts a 12-centimeter (cm) spring on the dowel. Next, she puts a foam ball onto the dowel. As she changes the length of the spring, she releases the ball into the air several times. She measures the distance the ball travels in meters (m). Length of spring Distance traveled (cm) by ball (m) 10 2 8 2.5 6 4 4 6 Which distance would the ball most likely travel if Sarah used a 7 cm spring?

• 1

• 3

• 5

• 7

Ang and Jessica put a spring on a dowel. Then they add a foam ball to the dowel. They push on the ball to squeeze the spring, and then they let the ball go. Which energy transformation are they investigating?

• stored energy to motion energy

• stored energy to sound energy

• magnetic energy to stored energy

• electrical energy to motion energy

When objects collide, energy is usually transformed into which forms?

• heat and light

• heat and sound

• electricity and light

• electricity and sound

At which part of this grid is energy converted to electrical energy from other types of energy?

• transmission lines

• generating station

• substation

• distribution line