Energy

Why is it important to find renewable energy sources?

• When non-renewable recourses are used up there will not be any to make energy. We need to find new ways to use wind, sun and water energy.

• Non-renewable resources can be renewed so we do not need to worry about it.

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Radiation transfer is

• movement away from the heat source.

• a heated surface that is touching something cold.

• heat circulating in a closed area like an oven.

Conduction transfer is

• movement away from heat

• a heated surface that is touching something (like a pot on a stove)

• heat circulating in a closed oven.

Convection transfer is

• movement away from heat

• a heated surface that is touching something (like a pot on a stove)

• heat circulating in a closed area like an oven.

Use the diagram to answer the following question.

People get the energy they need from the food they eat.

Which of the following best completes this energy chain?

• water

• soil

• plant

• gases

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what is the source of most of the energy on the Earth?

• electric motors

• gasoline engines

• generators

• the Sun

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An important fact about energy is that it can only be _______.

• created

• changed

  (transformed)

• destroyed

• manmade

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What makes the energy that powers a solar calculator?

• batteries

• light bulbs

• the Sun

• a generator

Use the chart to answer the question.

What would best complete the chart explaining how fossil fuels are formed over millions of years?

• Pressure and heat changed the form of the plant and animal fossils.

• Rivers and swamps carried away the plant and animal fossils.

• The Sun heated the plant and animal fossils.

• the plant and animal fossils sank in the ocean.

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Which form of energy was discovered when Albert Einstein

learned how to break apart the nucleus of an atom?

• nuclear energy

• light energy

• chemical energy

• sound energy

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