SCIENCE Week Five

Fourth Grade

•The basic properties of light are brightness, colors and________.

•being visible

•What is the brightness of light?

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•The brightness of light is related to the amount of light seen.

•What is white light?

•White light is made up of all colors of light mixed together.

•What is this tool and what does it do?

•It is a prism. It separates white light into different colors.

•What must an object do to be visible?

•It must either give off its own light or it must reflect light.

•What is light?

•Light is a form of energy. It is made up of many different colors.

•What is the ability to make something move, happen, or change?

 

•energy

•What does each color in white light represent as it relates to energy?

•Each color represents a different amount of energy.

• When white light passes through a prism, the prism separates the light into different colors. What are all these colors together called.

•spectrum

•How do we separate the colors in white light?

•with a prism

•How does light travel?

•Light travels in a straight line away from the source.

•What are the three behaviors of light rays?

•reflection, refraction, and absorption

•What happens when light is reflected from a surface?

•When light is reflected it bounces back from a surface.

•Why does a straw appear bent when it is placed in a glass of water?

• The light is being refracted. Refracted light passes from one type of transparent material to another, and changes direction.

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•What color does a red apple reflect?

•It reflects red light.

• Is this light wave being reflected or refracted?

light

•The light is being reflected. 

• What do we call materials that allows light to pass through because it is not reflected or absorbed. Objects can be seen clearly through this material.

•transparent

•What do we call materials such as wood and metal that do not let light travel through them?

•These materials are opaque.

• What do we call a material that scatters or absorbs some of the light that strikes it and allows some of the light to pass through it?

•translucent

•Is wax paper transparent or translucent?

•Wax paper is translucent

•Is air transparent or translucent?

•Air is transparent.

•Which material transparent, translucent or opaque allows the most light to pass through it?

•Transparent materials allow the most light to pass through it.