Light Sources and Shadows Quiz

What is a natural light source?

• A campfire

• A computer screen

• A light bulb

• The sun

What are the properties of transparent, translucent, and opaque objects?

• They all allow light to pass through

• They all have different levels of light transmission

• They all affect the visibility of objects behind them

• They all have the same level of transparency

How are shadows formed?

• Shadows are formed by the movement of clouds in the sky.

• Shadows are formed when the sun is directly overhead.

• When an object blocks the path of light, creating an area of darkness behind it.

• Shadows are formed by the reflection of light off of an object.

What is reflection of light?

• The reflection of light is the absorption of light by a surface

• The reflection of light is the emission of light from a surface

• The reflection of light is the bouncing back of light when it strikes a surface

• The reflection of light is the bending of light when it passes through a surface

What happens to light as it moves from one material to another?

• It changes color

• It slows down

• It bends

• It disappears

Name a natural light source other than the sun.

• light bulb

• fire

• moon

• star

What are some examples of translucent objects?

• Cardboard, paper, and fabric

• Frosted glass, wax paper, and some plastics

• Brick, stone, and steel

• Concrete, metal, and wood

Explain how artificial light sources are used in everyday life.

• Artificial light sources are used for cooking food

• Artificial light sources are used for indoor lighting, street lighting, vehicle headlights, and decorative lighting.

• Artificial light sources are used for heating homes

• Artificial light sources are used for growing plants

How does the angle of light affect the formation of shadows?

• The angle of light has no effect on the formation of shadows.

• The angle of light affects the length and direction of the shadow.

• The angle of light only affects the color of the shadow.

• The angle of light makes the shadow disappear completely.