PE, KE, Energy transformations

burning fire

• electrical --> light

• mechanical --> chemical --> thermal

• chemical --> radiant --> thermal

• thermal --> chemical

battery operated car

• mechanical --> chemical

• thermal --> mechanical

• electrical --> mechanical

• chemical --> mechanical

Energy transformation for coal-fire power plant.

(HINT: burning coal occurs first, then moving turbine to produce electricity.)

• nuclear --> electrical

• mechanical --> electrical

• chemical --> mechanical --> electrical

• thermal --> nuclear

Energy transformation for hydropower plant?

(HINT: moving water turns turbine that produces electricity.)

• nuclear --> electrical

• mechanical --> electrical

• chemical --> electrical

• chemical --> light --> thermal

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light
• Electrical to chemical
• Electrical to light
• Chemical to electrical

Tags

NGSS.HS-PS3-3

Which of the following shows an energy transformation from chemical energy to electrical to light energy?

• A bolt of lightning lights the night sky.
• A candle glows brightly in the dark.
• A fire in a fireplace lights up a room.
• A battery causes a flashlight to shine.

Tags

NGSS.MS-PS3-4

People get energy from the food that they eat and transform that energy as they move. Which energy transformations occur as a student rapidly rubs the palms of his hands together?

• mechanical to thermal to electrical
• chemical to mechanical to thermal
• mechanical to chemical to sound
• chemical to sound to electrical

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Which of the following devices transforms electrical energy into mechanical energy?

• An e-reader
• a fan
• a manual pencil sharpener
• ipod

A television works by transforming electrical energy into what other kinds of energy?

• Light, thermal, and sound
• Thermal, chemical, and solar
• Sound, mechanical, and electrical
• Light, chemical, and mechanical

Tags

NGSS.MS-PS4-1

Which energy conversion is taking place when you put gasoline in a car?

• thermal -> electrical
• mechanical -> electrical
• chemical -> mechanical
• mechanical -> electromagnetic