Energy Transformations

When a lion eats a zebra and then uses the energy from the zebra to run, the lion's body converts

• A. chemical energy to mechanical energy

• B. electrical energy to chemical energy

• C. chemical energy to light energy

• D. mechanical energy to chemical energy

Tags

NGSS.MS-PS3-5

Which energy transformations happen when the students close the circuit and the blades of the fan begin to spin?

• A. Chemical to mechanical to electrical

• B. Electrical to chemical to mechanical

• C. Chemical to electrical to mechanical

• D. Mechanical to electrical to chemical

The main parts of a working clothes dryer are shown in the diagram. Heating duct and element, Motor, SODOGR, Drum. This appliance dries clothes primarily by converting

• A. Electrical energy to heat and mechanical energy

• B. Mechanical energy to heat and electrical energy

• C. electrical energy to heat and light

• D. mechanical energy to heat and vaporization

A cook heats a metal in a microwave oven. What energy transformations occur between the microwave oven and the meal?

• A Electrical energy → light energy → chemical energy thermal energy → light energy

• B Chemical energy

• C Electrical energy → electromagnetic energy

• D Chemical energy electromagnetic energy

Tags

NGSS.MS-PS1-4

What energy transformation takes place when you turn on an electric light?

• Chemical > light + heat

• Chemical > electrical + heat

• Mechanical > light + heat

• Electrical > light + heat