Energy Transformations

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

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 bolt of lightning lights the night sky.

• A fire in a fireplace lights up a room.

• A battery causes a flashlight to shine.

What energy transformations take place when a battery-operated radio is in use?

• Electrical to chemical to light

• Sound to chemical to mechanical

• Chemical to electrical to sound

• Light to electrical to thermal

Tags

NGSS.MS-PS3-5

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 → Thermal → Electrical

• Chemical→ Mechanical → Thermal

• Mechanical → Chemical → Sound

• Chemical → Sound → Electrical

Tags

NGSS.MS-PS3-5

NGSS.MS-PS1-4

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

• 
• 
• 
• 

Tags

NGSS.MS-ETS1-1

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

The diagram shows a hot air balloon rising. Propane gas tanks are seen at the bottom of a balloon. What energy transformations occur when propane gas is used to lift the balloon?

• Mechanical --> Light --> Chemical

• Chemical --> Mechanical --> Thermal

• Thermal --> Chemical --> Light

• Chemical --> Thermal --> Mechanical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

The main parts of a working clothes dryer are shown in the picture. This appliance dries clothes primarily by converting -

• electrical energy to heat and mechanical energy

• mechanical energy to heat and electrical energy

• electrical energy to heat and light

• electrical energy to heat and vaporization

A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?

• The light energy and the thermal energy stored in the match changed to chemical energy

• The light energy and thermal energy stored in the match changed to mechanical energy

• The thermal energy stored in the match changed to light energy and chemical energy

• The chemical energy stored in the match changed to thermal energy and light energy

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

The Law of Conservation of Energy states:

• Energy can be created or destroyed, but not transformed 

• Energy cannot be created, but it can be destroyed

• Energy can't be created, destroyed or transformed

• Energy can't be created or destroyed, but it can be transformed.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

NGSS.MS-PS3-2