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English 21 Public

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Give one example of natural light.

sun, moon, firefly, stars, jellyfish

15

Give one example of artificial light.

flashlight, candle, light bulb, lamp

15

True or False: We use light for reading.

True

15

This materials allow light to passthrough with almost no disturbance.

Transparent

15

This materials allow only part of the light to pass through, while also bouncing it in many new directions.

Translucent

15

A frosted glass door is an example of what source of light?

Translucent

15

This materials completely block light from passing.

Opaque

15

Give an example of Opaque

any dark color or blacking materials

15

When light bounces off an object it is called?

Reflection

15

This is the bending of light waves as they pass from one substance to another.

Refraction

15

Heat coming from the Sun is called?

Solar heat

15

True or False: Rubbing two objects against each other can produce heat.

True

15

True or False: Burning is when an object burns, it produce a flame that gives cold.

False

15

This energy is the most common form of energy.

Electricity

15

True or False: Stay away from fallen electric wires. They are dangerous.

True

15

True or False: Plug electric appliances into an outlet when your hands or your body is wet.

False

15