NGSS.MS-PS2-5

Opposite charges:

• attract
• repel
• create an electrical current
• create a magnetic field

Tags

NGSS.MS-PS2-5

What is our best evidence that Earth has a magnetic field?

• All things fall toward Earth's center
• A compass needle lines up with it
• Winds blow from east to west
• Earth's oceans all have currents

Tags

NGSS.MS-PS2-5

Any object with mass is surrounded by a gravitational field.

• True
• Sometimes
• False
• Never

Tags

NGSS.MS-PS2-5

Any object with mass is surrounded by a gravitational field.

• True
• Sometimes
• False
• Never

Tags

NGSS.MS-PS2-5

Consider the electric field lines shown in the diagram below. From the diagram, it is apparent that object A is ____ and object B is ____.

• +,+
• +,-
• -,+
• -,-

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A scientist runs an electric current along a wire. A magnetic compass is placed near the wire.. The scientist observes that whenever the current is turned on, the compass needle moves.

Why does the compass needle move?

• The current creates an electric field around the wire.

• The current creates a magnetic field around the wire

• The current adds electric charge to the compass needle.

• The current increases the forces of gravity on the compass needle.

Tags

NGSS.MS-PS2-5

Earth has a magnetic field that is similar to a bar magnet's magnetic field.

• true

• false

Tags

NGSS.MS-PS2-5

A force that can act at a distance is called

• non contact force

• friction

• balanced

Tags

NGSS.MS-PS2-5

Two neutrally charged balloons are touching. What will happen if a negatively charged rod is brought near one of the balloons without touching it?

• the balloons will move toward each other

• the balloons will move away from each other

• electrons on the balloons will move toward the rod

• electrons on the balloons will move away from the rod

Tags

NGSS.MS-PS2-5

A non-contact force is between

• two objects that aren't touching

• two objects that are touching

• the ground and wheels

• you and me

Tags

NGSS.MS-PS2-5