When does a guitar make sound?

• When the string vibrates

• When the string are long enough

• When the string are thick enough

• When the string have the right number

Tags

NGSS.MS-PS4-1

A glass window of a car is made of ____________ material.

• opaque

• transitional

• translucent

• transparent

Tags

NGSS.MS-PS4-2

Which of the following took place when the light struck the surface in "Scenario A"?

• refraction

• absorption

• reflection

• scattered

Tags

NGSS.MS-PS4-2

What is the name of the group of colors of light into which the white light was separated?

• Reflection

• Energy

• Rainbow

• Spectrum

When all the colors of light are mixed together, they create a unique form of light. What term is used to describe the light created by the mixing of different colors of light?

• blue light

• orange light

• white light

• red light

Megan brought an orange scarf. Which statement is true about her scarf?

• Meagan’s scarf is dispersing orange light.

• Meagan’s scarf is absorbing orange light.

• Meagan’s scarf is refracting orange light.

• Meagan’s scarf is reflecting orange light.

Tags

NGSS.MS-PS4-2

What factors must be in place before an object is visible?

• It must be a source of light or reflect light.

• It must be a source of light or reflect light.

• It must be both a source of light and reflect light

• It cannot reflect light.

Tags

NGSS.4-PS4-2

Mary is making a sound by vibrating a rubber band that is stretched between her fingers. If she moves her fingers closer together, the vibration of the rubber band slows down.

When the vibration slows down, what will happen to the pitch of the sound?

• it will get lower

• it will get higher

• it will not change

• it will get louder

If the vibration of a sound gets stronger which of the following will be true?

• The sound will not last

• The sound will get louder

• The sound will get quieter

• Nothing will change

Tags

NGSS.MS-PS4-1

Roger is holding three materials in front of his face as shown.

From left to right, what types of materials are these?

• Opaque, translucent, transparent

• Transparent, translucent, opaque

• Translucent, opaque, transparent

• Opaque, transparent, translucent

Tags

NGSS.MS-PS4-2