Science Unit Test

Front

Energy is changed from one form to another during an energy transformation. Which of the following is an example of a transformation of electrical energy into another kind of energy?

• a light bulb lighting up
• a motor making a noise
• a heater feeling warm
• all of these

Back

all of these

Front

How could Kelly find out which toy car converts the most electrical energy into motion energy?

Back

Test the speed of the cars.

Front

When electricity runs through a light bulb, what other type of energy is produced?

Back

light energy

Front

Wilton's solution: When the fan spins, the light bulb turns on. What was it designed to do?

Back

use moving air to produce light energy

Front

When electricity runs through an electric stove, what other type of energy is produced?

Back

heat energy

Front

What evidence does Betty have that the microwave changes electrical energy into heat energy?

Back

Her lunch gets hot.

Front

What statement explains the energy transfer in the lamp?

Back

The electrical energy from the outlet transferred into light energy in the lamp.

Front

Jamal's fan uses _______ energy to cause motion.

Back

electrical

Front

Which of these objects is demonstrating motion?

• A building casting a shadow behind it.
• A kid jumping to catch a frisbee.
• A cat lying on a windowsill.
• A baby sleeping in her crib.

Back

A kid jumping to catch a frisbee.

Front

The act or process of changing position and/or direction

Back

Motion