Renewable energy

The wind movement has ………. energy which moves the windmills blades.

• Kinetic

• Solar

• Potential

• Thermal

………….depends on electricity to do its functions.

• Manual mixer

• Hand bell

• Electric mixer

• Toy car

The solar energy is converted into ………….. energy in greenhouses.

• Electric

• Light

• Thermal

• Kinetic

Convergent …………… are used to collect and focus sun rays to cook the food inside.

• Wooden

• Plastic

• Mirrors

• Paper

Green houses allow farmers to plant crops that only grow in …………

• Polar climate

• warm climate

• Absence of water

• absence of sunlight

The output energy of watermills is …………… energy

• Kinetic

• Solar

• Heat

• Electric

The change of energy in wind turbines is opposite to the change if energy in …………….

• Electric bell

• Electric fan

• Electric heater

• Electric iron

When the ………….. energy of wind increases , the blades of wind turbines move more quickly.

• Potential

• Kinetic

• Thermal

• Solar

Water flows through turbines of hydroelectric dams to generate………….. energy.

• Kinetic

• Thermal

• Electrical

• Potential

Wind is a renewable energy resource.

• True

• False