Science STAAR Release

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

• in a straight line.

• back into the fiber.

• around the fiber.

• in a curve.

Tags

NGSS.MS-PS4-2

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

• When light moves through air into water

• When light hits a wall

• When light passes through outer space

• When light hits a mirror

Tags

NGSS.MS-PS4-2

Scientists use telescopes to make distant objects appear closer. Some parts of a telescope are shown below.

Which of the following best describes how the objective lens of this telescope helps a scientist observe the moon?

• The objective lens produces light

• The objective lens blocks light

• The objective lens reflects light

• The objective lens refracts light

Some students are feeding a crab in an aquarium. They use tongs to place the food directly in front of the crab. The students look through the side of the aquarium. They notice that the image of the tongs appears to break a the tongs enter the water. Which property of light are the students observing in this situation?

• Light can be refracted and separated into different colors as it moves from air to a different medium.

• Light is refracted as it moves from one medium to another medium.

• Light travels in a straight line and can be reflected off the surface of the water.

• Light is absorbed by water and reflected off glass.

Tags

NGSS.MS-PS4-2

This photograph shows a girl using a lab instrument during an investigation on light. A teacher asks the other students in the class to look carefully at the girl's eye and give reasons for its appearance. Which table correctly identifies the reasons for the appearance of the girl's eye through the lab instrument?

• 
• 
• 
• 

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The picture shows an area of Yosemite National Park. Which statement about light is supported by this picture?

• Light travels in straight lines until it enters a different material like water in a lake.

• Light can refract in air and in clear water.

• The water in the lake is blue because light forms an image.

• Light is reflected off the smooth surface of the lake.

Tags

NGSS.MS-PS4-2

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 into a box. Which diagram shows how the teacher should position the two mirrors?

• 
• 
• 
• 

Tags

NGSS.MS-PS4-2

A teacher takes the top and side off a box. She cuts a hole in another side and puts a candle outside the box, as show below.

When the teacher lights the candle in a dark room, some of the candlelight shines through the hole. Which diagram best shows how the light appears on the opposite wall of the box?

• 
• 
• 
• 

Tags

NGSS.MS-PS4-2

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?

• 
• 
• 
• 

Tags

NGSS.MS-PS4-2

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?

• 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.

Tags

NGSS.MS-PS4-2