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 of these is an example of light energy being transformed into chemical energy?

• A glow stick lights up when broken.
• Water heated by the sun evaporates.
• A plant makes sugar in the sunlight.
• A battery causes a buzzer to vibrate.

Tags

NGSS.MS-LS1-7

NGSS.MS-LS1-6

Which kind of energy change occurs when a candle is burning?

• Chemical to light.
• Light to electrical.
• Solar to heat.
• Chemical to electrical.

Tags

NGSS.MS-PS1-2

Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?

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

The picture shows a microwave oven. As a microwave oven is operated, electrical energy is transformed into all of the following types of energy EXCEPT —

• Solar
• Light
• Thermal
• Mechanical

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-3

What energy conversions take place when you vigorously rub your hands together?

• friction => heat

• chemical => thermal

• mechanical => thermal

• kinetic => chemical

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

What type of energy is food energy stored in your muscles?

• mechanical

• nuclear

• thermal

• chemical

Tags

NGSS.MS-LS1-7

Which type of energy propels a baseball after it has been struck by a bat?

• chemical

• thermal

• mechanical

• nuclear

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

What is the correct energy chain from the sun to grass to cow?

• light and thermal => chemical => chemical

• light => heat => mechanical => chemical

• light => thermal => mechanical

• nuclear => chemical => potential

Tags

NGSS.MS-LS1-7

NGSS.MS-LS1-6

NGSS.MS-LS2-3

NGSS.MS-ESS2-1

Muscles operate to push the pedals on a bicycle causing the wheels to turn. What type of energy being represented?

• mechanical

• physical

• thermal

• chemical

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1