Science Chapter 8

_______ are the back and forth movements of an object.

• Waves

• Vibrations

• Decibels

• Diffraction

The bending of light around barriers or through openings is ______.

• diffraction

• refraction

• reflection

• transparent

How do sound vibrations travel?

• in curvy lines

• they are reflected

• in compression waves

When light changes speed as it enters new material, it is _____ and bends.

• reflected

• absorbed

• refracted

• reversed

What do decibels measure?

• volume

• pitch

• light

• frequency

When you see an object, what are you seeing?

• the colors that are absorbed

• the colors that are reflected

• the colors that are refracted

• the colors that you like

How does light travel?

• in zig zags

• in curvy lines

• in all directions

• in straight lines

What happens when light hits a smooth, shiny surface?

• It refracts

• It gets absorbed

• It reflects

• It goes through the object

What do you see when light is reflected?

• the exact image of the object

• nothing

• the reversed image of the object

• a rainbow

A sound with high pitch has ______.

• High frequency

• Low frequency

• No frequency