Energy, Sound, Light, and Heat

Energy is all​ ​​ (a)   us. It makes things ​ (b)   and makes changes possible. Energy cannot be created or ​ (c)   , but it can be changed from one​ (d)   to another.

• around
• happen
• destroyed
• form

Label the images with the forms of energy.

a

b

c

d

e

light energy

sound energy

thermal energy

chemical energy

electrical energy

Tags

NGSS.MS-PS1-4

Classify the forms of energy.

Groups:

(a) Light energy

,

(b) Thermal energy

,

(c) Sound energy

,

(d) Electrical energy

• flashlight

• sunlight

• radiator

• smartphone

• trumpet

• dog barking

• computer

• boiling water

Match to make true sentences.

• kinetic energy.

• A toaster transforms

• light and thermal energy.

• When wood burns, chemical energy is transformed into

• electrical energy into thermal energy.

• When you step off a diving board, potential energy is transformed into

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-3

Label the images with the types of renewable energy.

a

b

c

d

e

solar energy

geothermal energy

hydropower

wind energy

biomass

Label the three non-renewable energy sources.

a

b

c

oil

coal

natural gas

Tags

NGSS.MS-ESS3-1

NGSS.MS-ESS3-4

Complete the text.

When an object​ ​ (a)   ​ , it produces sound waves. These waves travel through a ​ (b)   (solid, liquid, or gas) to our ears so that we can hear them.

We perceive large vibrations as ​ (c)   sounds and small vibrations as ​ (d)   sounds.

Sound waves can only travel through a medium, such as air. They cannot travel through a ​ (e)   .

• vibrates
• medium
• loud
• quiet
• vacuum

Tags

NGSS.MS-PS4-2

Match to make true sentences.

Groups:

(a) Natural light

,

(b) Artificial light

• sources are found in nature.

• is transformed from another energy source.

• sources are man-made.

• comes mainly from the sun.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

Organize these options into the right categories

Groups:

(a) Sound

,

(b) Light

• can only travel through a medium.

• travels at about 300,000 kilometers per second.

• does not need to travel through a medium.

• travels in waves.

• travels quickly, but not as fast as light.

• travels in straight lines called rays.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Choose the correct options.

a. ​ (a)   occurs when rays of light are not absorbed by an object and bounce off, instead.

b. ​ (b)   occurs when light passes through a medium of a different density and changes direction.

c. Rainbows are caused by ​ (c)   .

d. Mirrors ​ (d)   light.

e. Lenses ​ (e)   light.

• Reflection
• Refraction
• refraction
• reflect
• refract

Tags

NGSS.MS-PS4-2