What do we call the back and forth movement of matter?

• pitch

• frequency

• vibration

• refraction

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The loudness of sound is called

• volume

• pitch

• refraction

• frequency

Tags

NGSS.MS-PS4-1

How high or low a sound is is called

• frequency

• pitch

• volume

• opaque

______________ is the measurement of the number of vibrations per second.

• volume

• pitch

• refraction

• frequency

A ______________ lens is a lens that is thinner in the middle and makes an object appear smaller.

• concave

• refraction

• convex

• mirror

A lens that is thicker in the middle and makes an object appear bigger is called a ____________ lens.

• opaque

• concave

• convex

• transparent

______________ is the bending of light rays.

• Refraction

• Transparent

• Reflection

• Translucent

Tags

NGSS.MS-PS4-2

Which of the following objects is translucent?

• tree limb

• wax paper

• glass window

• book

Tags

NGSS.MS-PS4-2

Which surface would bounce back almost all of the light that hit it?

• frosted glass

• clear plastic

• mirror

• water

Tags

NGSS.MS-PS4-2

A frontier family made a window by rubbing grease all over a thick piece of paper. When the paper was used as a window, it let in light, but the family could not see through it. Which word describes the greased paper?

• translucent

• transparent

• opaque

• reflective

Tags

NGSS.MS-PS4-2