LCS Common Assessment - 4th Grade Science Unit 5 Light & Sound

Name (First and Last)

Homeroom

What happens to light when it is shined on a mirror?

• refraction
• absoprtion
• frequency
• reflection

Which of the following objects is translucent?

• mirror
• frosted glass
• construction paper
• water

Why does the white light look like a rainbow when it exits the prism?

• The prism separates white light into its component colors.
• The prism adds more kinds of light.
• The prism is full of colors.
• The prism is full of rainbows.

Jared is going to meet his friends at the park to watch the fireworks on the Fourth of July. He knows that it will be dark when he arrives at the park at 9:00 p.m. Which of these would best help Jared find his friends without disturbing other people in the park?

• asking his friends to show a policewoman a picture of him to see if she knows him
• asking his friends to hold up a large sign with his name written on it
• asking his friends to yell his name over and over again starting at 9:00 p.m.
• asking his friends to shine a flashlight toward the entrance of the park starting at 9:00 p.m.

These straws are being refracted. What causes refraction?

If there is a tornado, everyone in the area needs to be warned right away. That way, they can get inside and take cover. Which of these would be the best way to warn everyone at the same time?

• shining a bright light
• sounding a loud siren
• calling every phone, one at a time
• knocking on every door, one at a time

Which of the following items are opaque?

• block of wood
• window
• water
• glass jar

Which diagram of a sound wave represents the sound with the HIGHEST pitch?

• A.
• B.
• C.
• D.