Pre-Assessment Energy Transformations

Which of the following forms of energy is used to power a computer?

• Heat

• Sound

• Light

• Electrical

The illustration shows a hand generator.

Turning the handle of the generator causes the bulb to light up. This device uses what type of energy to light the bulb?

• Mechanical to electrical

• Electrical to sound

• Thermal to mechanical

• Light to thermal

Tags

NGSS.MS-PS3-5

Campfires are sometimes used to cook food. Which type of energy from the campfire cooks the food? a. L

• a. Light

• Sound

• Thermal

• Electrical

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following devices is designed to change mechanical energy to sound energy?

• Guitar

• Candle

• Battery

• Flashlight

The illustration shows a lamp giving off light.

What form of energy does the lamp use to produce light?

• Mechanical

• Thermal

• Electrical

• Light

All of the following devices produce light energy EXCEPT –

• laser pointers.

• air conditioners.

• fluorescent lamps

• computer monitors.

Tags

NGSS.MS-PS4-2

A student observed that sugar in hot water dissolved more quickly than in cold water. The student was investigating the effects of what form of energy?

• Thermal

• Sound

• Electrical

• Mechanical

Tags

NGSS.MS-PS1-4

The picture shows a wind-up toy frog.

After winding, the toy frog flips over. This toy demonstrates what kind of energy?

• Light

• Thermal

• Electrical

• Mechanical

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Some students observing a classroom device being used noticed the following energy transformations:

Electrical → Mechanical → Sound

Which device were the students most likely observing?

• A triple beam balance measuring an object’s mass.

• A pencil sharpener plugged into a wall outlet.

• A projector displaying a diagram on the screen.

• A working flashlight used to light up a dark corner.

. Which of the following devices transforms electrical energy into mechanical energy?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-5