When you light a match, what type of energy conversion is taking place?

A. Mechanical to electrical
Incorrect. Think about what type of stored energy would be in the match.

B. Electrical to chemical
Incorrect. Think about what type of stored energy would be in the match.

C. Thermal to mechanical
Incorrect. Think about what type of stored energy would be in the match.

D. Chemical to thermal
Correct!

During photosynthesis, plants convert —

A. chemical energy into thermal energy
Incorrect. Plants use energy from the sun during photosynthesis. What type of energy would plants get from the sun?

B. radiant energy into chemical energy
Correct!

C. thermal energy into radiant energy
Incorrect. Plants use energy from the sun during photosynthesis. What type of energy would plants get from the sun?

D. mechanical energy into chemical energy
Incorrect. Plants use energy from the sun during photosynthesis. What type of energy would plants get from the sun?

When batteries are used to power a radio, what energy transformation takes place?

A. Chemical to electrical
Correct!

B. Electrical to chemical
Incorrect. Think about what type of stored energy would be in the batteries.

C. Chemical to thermal
Incorrect. Think about what type of stored energy would be in the batteries.

D. Thermal to mechanical
Incorrect. Think about what type of stored energy would be in the batteries.

Which item pictured below would convert electrical energy into thermal energy?

A. Iron    
Correct!

B. Match    
Incorrect. A match would convert chemical into thermal.

C. Mixer    
Incorrect. A mixer would convert electrical into mechanical.

D. Candle    
Incorrect. A candle would convert chemical into thermal and radiant.