Science

A student uses the setup shown to investigate ways to speed up evaporation. Which forms of energy are being compared in the student's investigation?

• light and electrical

• mechanical and electrical

• light and thermal

• mechanical and thermal

Examples of objects that use different types of energy to perform their functions are shown. Which examples use mechanical energy to perform their functions?

• 1, 2, and 4

• 1, 3, and 4

• 1 and 2 only

• 3 and 4 only

A student recorded the time it took for all the water in a puddle on a sidewalk to evaporate after a rain. Which kind of energy causes water to evaporate?

• light energy from streetlights

• sound energy from passing cars

• thermal energy from the environment

• mechanical energy from nearby streets

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

A science class is observing a pet turtle in a small plastic pool. The students turned on a portable camping lamp that is clamped on to a counter next to the pool. Which kind of energy is used by the portable lamp to produce light?

• mechanical energy because the lamp is clamped on to the counter

• thermal energy because the lamp increases the temperature of the water

• electrical energy because the lamp is battery-operated

• sound energy because the lamp vibrates when clicked on

The photograph shows a laser cutting a sheet of metal as the laser moves from one end of the metal to the other. Four groups of students each made a table of examples of different types of energy involved in this process. Which of these tables is correct?

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Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Eight activities that use energy are listed below.

1. A bus driver starts a bus.

2. A soccer player kicks a ball.

3. A teacher writes notes on a chalkboard.

4. A chef stirs soup on a stove.

5. A bird flaps its wings and chirps to attract a mate.

6. A basketball referee blows a whistle.

7. A waiter pours water into a glass.

8. A person changes the channel on a TV.

Each of these activities requires the use of which kind of energy?

• thermal

• mechanical

• electrical

• sound

Which of these devices is the only one NOT designed to produce both sound and light energy?

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A family was vacationing in the mountains in a cabin that had no electrical power. They needed boiling water in order to prepare dried soup mix. With no electrical energy available, which method would most likely provide enough thermal energy to quickly heat the water to boiling?

• Using a microwave oven to heat water in a glass jar for 3 minutes.

• Shaking the water in a closed, insulated plastic bottle for 3 minutes.

• Shining a battery-powered flashlight on a metal container of water for 10 minutes.

• Placing a metal pot of water over glowing charcoal in an outdoor grill for 10 minutes.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

The toy oven shown uses a lightbulb to bake small cakes. What types of energy does the toy oven use to bake the cakes?

• electrical and thermal

• mechanical and electrical

• thermal and mechanical

• light and sound

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Which object requires only mechanical energy to perform its main function?

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Tags

NGSS.MS-PS3-1