GENERAL PURPOSES OF ENERGY

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

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A student uses a hot plate to boil water in the science lab. Which of these objects uses the same source of energy as the hot plate?

• a guitar using mechanical energy

• a teapot using thermal energy

• a phone using sound energy

• a lamp using light energy

Which of the following statements is an example of the use of thermal energy?

• A power plant using falling water to generate electricity.

• A house using heat trapped inside Earth for warmth in winter.

• A student using a solar powered calculator to solve math problems.

• A bat using echoes to locate and navigate its prey.

A family decorated a tree for the holidays. They strung lights on it and plugged it in. Many colorful lights began to glow. What types of energy are being used or produced by the decorated tree?

• heat and sound

• light and thermal

• electrical and light

• light and mechanical

Which forms of energy are illustrated in the picture?

• mechanical energy

• electrical energy

• light energy

• thermal energy

• sound energy

Which forms of energy are illustrated in the picture?

• mechanical energy

• electrical energy

• light energy

• thermal energy

• sound energy

What energy do you produce riding your bike? __________

• Sound Energy
• Mechanical Energy
• Light Energy
• Electrical Energy

When you plug in a radio, how do you know the radio produced energy? ________

• You see sound energy
• You feel light energy
• you hear sound energy
• You are energized

Andrew watches a plane fly overhead. Which of the following observations provides the best evidence that the plane is using energy?

• The plane moves

• The plane is large

• The plane is white

• The plane has wheels

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

• Light

• Sound

• Thermal

• Electrical