Waves and Communication

Which of the following is the best source of information on how building cell phone towers affects the environment?

• Gather information on how much time people spend on their cell phones every day.

• Collect data on how many cloudy and sunny days there are.

• Study the plants and animals in an area before and after building the cell phone tower.

• Gather information on which plants and animals people like best.

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

When you call your friend using your cell phone, your voice turns into a digital signal that is transmitted. For your friend to hear you, their device must

• have a battery that can last at least six hours.

• be small enough to fit in their pocket.

• be able to decode the digital signal into sound.

• have the same phone case as you.

Tags

NGSS.MS-PS4-3

An object can be seen when light

• passes through an object.

• reflects off the object and reaches your eye.

• is not able to pass through an object.

• is not very bright.

Tags

NGSS.MS-PS4-2

Which of the following best explains why a person would not able to see an apple if they were holding a piece of paper over it?

• The light is not able to reach the apple.

• The piece of paper is reflecting the light.

• The light is not turned on.

• The light is reflecting off the apple but is unable to reach the person's eyes.

Tags

NGSS.MS-PS4-2

Which of the following is an observation that supports the idea that light is needed in order to see objects?

• Very bright light is harmful to a person's eyes.

• People cannot see objects in a room that has no light.

• Objects can be many different colors.

• People can see objects in a room that has no light.

Two students are in science lab and each one is holding the end of a rope. Student 1 holds their end still, while Student 2 moves the other end of the rope up and down. What can the students do to INCREASE the wavelength of the wave in that rope?

• Use a longer rope.

• Let go of the rope.

• Student 2 can move the rope more quickly.

• Student 2 can move the rope more slowly.

Tags

NGSS.HS-PS4-1

Students want to study how water waves move in their classroom. Which of the following is the most important feature in the design of their investigation?

• Making sure there is enough water to dissolve salt.

• Adding food coloring to dye the water blue.

• Making the water move in regular patterns.

• Build models of toy boats.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Students float a cork in some water and make waves in water. Students can measure one part of the wave by measuring what?

• how much the cork weighs when dry

• the temperature of the water

• how far the cork moves up and down

• how long it takes before the cork sinks

Tags

NGSS.MS-PS4-1

Water waves are able to carry objects in the direction they are moving only

• if the waves are very large.

• if the object is very light weight.

• where the water meets the beach.

• where the water is the deepest.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

How does a person see an object?

• Light bounces off both the object and the eye

• Light bounces off the object and to the person's eye

• The eye sees the object directly

• The eye sees the object directly while light also bounces off the object

Tags

NGSS.MS-PS4-2