5.2 Energy

In which of these examples does using energy cause work to be done? Select 3 correct answers.

• rock sitting on the ground

• moving a box

• books sitting on a desk

• fan spinning

• walking upstairs

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Omar is demonstrating how to use a hand drill to his class. He turns the handle of the wheel which makes the bit on the end of the drill rotate. Omar explains to the class that the drill can be used to make holes in wood.

What kind of energy does the hand drill most likely use to make holes in wood?

• electrical

• heat

• light

• mechanical

Which of the following examples requires the use of radiant (light) energy?

• A person stops to tie their shoes

• A person uses a flashlight at night

• A drum is played during music class

• An oven is used to bake a cake

Tags

NGSS.MS-PS4-2

A violinist pulls a bow across the strings of the violin.

Which best describes how energy is transformed as the musician plays the violin?

• sound energy is transformed to thermal energy

• mechanical energy is transformed to sound energy

• sound energy is transformed to electrical energy

• electrical energy is transformed to radiant energy

Tags

NGSS.MS-PS3-5

The diagram below shows an example of energy changing forms.

How is energy being transformed in the diagram?

• electrical --> sound --> radiant and mechanical

• mechanical --> radiant --> sound and electrical

• radiant --> electrical --> mechanical and sound

• radiant --> sound --> mechanical and electrical

Which 2 objects transform electricity into radiant (light) energy?

• lamp

• fan

• guitar

• television

A hairdryer transforms...

• electrical energy to thermal energy

• mechanical energy --> electrical energy

• sound energy --> thermal energy

• thermal energy --> mechanical energy

Energy CAN change forms, but energy CANNOT be...

• created or destroyed

• transferred or transformed

• mechanical or electrical

• Kinetic or stored

Tags

NGSS.MS-PS3-5

The stove top transforms electrical energy into ________ energy to cook food.

• mechanical

• thermal

• chemical

• sound

Tags

NGSS.MS-PS1-4

Which items use electrical energy to do work? Select 2 correct answer.

• alarm clock

• sun

• light bulbs

• plant

• rock