Energy transformations

Some students observing a classroom device being used, noticed the below energy transformations. 
Electrical → Mechanical → Sound
Which device were the students most likely observing?

• A triple beam balance measuring an object’s mass.
• A pencil sharpener plugged into a wall outlet.
• A projector displaying a diagram on the screen.
• A working flashlight used to light up a dark corner.

Which type of energy transformation occurs when a flashlight shines?

• chemical → thermal → electrical
• chemical → electrical → light
• thermal → chemical → light
• chemical → electrical → chemical

Tags

NGSS.MS-PS3-5

A lamp that plugs into a wall socket draws energy which flows through a thin wire in the bulb causing it to glow. What energy transformations are taking place?

• chemical → light → electrical
• mechanical → sound → light
• thermal → solar → electrical
• electrical → thermal → light

Tags

NGSS.HS-PS3-3

Which of the following shows the correct order of the energy transformations that occur when green plants produce their food from the Sun’s energy?

• chemical → thermal
• light → chemical
• thermal → light
• chemical → electrical

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

The Theory of the Conservation of Energy states -

• Energy can be created, just not destroyed. It changes its form from one type to another.
• Energy can never be created nor destroyed. It can only change its form from one type to another.
• The total energy in our Universe changes, as different forms of energies can be transformed from each other under certain circumstances.
• Energy transformations do not passively occur in our lives, rather we actively make use of energies and transform energies.

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

Solar Energy is transferred to _____ Energy.

• Mechanical
• Solar
• Sound
• Electrical

Tags

NGSS.MS-PS3-5

Electrical Energy is transferred to _____ Energy.

• Thermal
• Solar
• Electrical
• None

Tags

NGSS.MS-PS3-4

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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 of following are types of kinetic energy? Check all that apply.

• sound energy

• light energy

• thermal energy

• mechanical energy

• potential

Tags

NGSS.4-PS3-2