(R) 5.6C Science STAAR (Light)

Which of these best demonstrates the reflection of light? (5.6C)

• Looking through the glass of a large window

• Looking at an image formed on a silver spoon

• Looking at a lightbulb that is glowing

• Looking at a star on a clear night

When light travels through air into a prism, it bends and separates into many colors. In which other situation does light bend? (5.6C)

• When light moves through air into water

• When light hits a wall

• When light passes through outer space

• When light hits a mirror

Scientists use telescopes to make distant objects appear closer. Some parts of a telescope are shown here. Which of the following best describes how the objective lens of this telescope helps a scientist observe the moon? (5.6C)

• The objective lens produces light.

• The objective lens blocks light.

• The objective lens reflects light.

• The objective lens refracts light.

The picture shows a child standing in a swimming pool. Why does the lower part of the child appear so much different in size from the upper part? (5.6C)

• The light rays that travel through water and then into air are refracted.

• The light rays that travel through water and then into air are enlarged.

• The light rays that travel through air and then into water are reflected.

• The light rays that travel through air and then into water are reduced.

Some students paint the inside of several boxes. They paint each box a different color. They observe that the inside of the box painted white looks brighter than the others. What is the most likely reason this box looks brighter? (5.6C)

• More light is reflected off white paint.

• More light is refracted by white paint.

• More light passes through white paint.

• More light is absorbed by white paint.

The model shows a special glass fiber that is thinner than some metal wires. When light enters one end of the fiber, it moves through the fiber as shown. After the light leaves the fiber, it travels---(5.6C)

• in a straight line

• back into the fiber

• around the fiber

• in a curve

A student looks into a mirror and sees an image of an object. Which diagram shows an X where the object is most likely located? (5.6C)

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The diagram shows a fish being viewed from above the water. The fish appears to be closer to the surface than it really is. What causes this difference? (5.6C)

• Light is reflected.

• Light is refracted.

• Light is focused.

• Light is blocked.

In 1859, Henry Bursill published a book of hand shadows. The picture shows one of these hand shadows. Which property of light makes it possible to produce hand shadows? (5.6C)

• Light can be refracted.

• Light is a form of energy.

• Light travels in straight lines.

• Light can be separated into different colors.

Lasers produce a beam of light that can be focused on a small area. A teacher uses two mirrors to shine a beam of light from a laser onto a box. Which diagram shows how the teacher should position the two mirrors? (5.6C)

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