3.4a

 Karen believes the model below explains how shadows change throughout the day.  

Why would you agree with her?

• The shadow grows longer as the sun rises higher.

• The shadow shrinks shorter as the sun rises higher.

•  The flag’s shadow is shorter when the sun is behind it.

• The flag’s shadow is shorter when the sun is in front of it.

Tags

NGSS.5-ESS1-2

What else should the student include in the drawing?

• The student should include more of the background.

• The student should include a flashlight.

• The student should include people.

• The student should include the sun.

In this circuit

• The bulb will light up

• The bulb will not light up

Tags

NGSS.4-PS3-2

Electricity that flows in a closed path is called a

• path

• current

• circuit

____________ allows electricity to flow.

• A conductor

• An insulator

• A magnet

The flow of electricity requires a

• complete path

• incomplete path

• insulated current

Look at this circuit

• is it an open circuit?

• Is it a closed circuit?

This circuit

• Has one break

• Has many breaks

• Has no breaks

What kind of metal inside this wire?

• Gold

• Plastic

• Copper

• USB cable

What must a simple circuit need? Pick 4.

• Battery

• Switch

• Plastic

• Wires

• Lightbulb