Energy Conversion

The law of conservation of energy states:

• Energy is not created or destroyed, it only changes from.

• Energy always increases

• Energy always decreases

• Energy is always variable.

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Blackbody radiation, such as the glow of an incandescent lightbulb, is is the conversion of what energies?

• Thermal to light (electromagnetic)

• Light (electromagnetic) to thermal

• Chemical to thermal

• Thermal to chemical

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A microwave oven uses what energy conversion to cook food?

• Thermal to light (electromagnetic)

• Light (electromagnetic) to thermal

• Chemical to thermal

• Thermal to chemical

• Magnetic to thermal

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Energy flows from ___________________.

• from high to low.

• low to high.

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A propane grill uses what energy conversion to cook food?

• Thermal to light (electromagnetic)

• Light (electromagnetic) to thermal

• Chemical to thermal

• Thermal to chemical

• Magnetic to thermal

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NGSS.HS-PS1-4

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What is the energy conversion for photosynthesis?

6 CO₂ + 6 H₂O → 6 O₂ + C₆H₁₂O₆ ΔH = 47 kJ/mol

• Light (electromagnetic) to chemical

• Light (electromagnetic) to thermal

• Thermal to chemical

• Chemical to thermal

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What energy exchange keeps you warm throughout life?

• Chemical to thermal

• Chemical to light (electromagnetic)

• Thermal to chemical

• Light (electromagnetic) to thermal

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What is the energy conversion found in a resistive stove burner to cook food?

• Thermal to light (electromagnetic)

• Light (electromagnetic) to thermal

• Chemical to thermal

• Electrical to thermal

• Magnetic to thermal

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NGSS.HS-PS3-3

The surface of the Earth is warmed by converting what two energies ___________.

• Thermal to light (electromagnetic)

• Light (electromagnetic) to thermal

• Nuclear to thermal

• Electrical to thermal

• Magnetic to thermal

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NGSS.HS-ESS1-1

The core of Earth is heated by the conversion of what two energies ___________.

• Chemical to thermal

• Light (electromagnetic) to thermal

• Nuclear to thermal

• Pressure to thermal

• Magnetic to thermal

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