Physical Science Chapter 7 Test

Indicate whether the statement is true or false. When you bring the south ends of two magnets close together, they repel each other.

• True

• False

Tags

NGSS.MS-PS2-3

Indicate whether the statement is true or false. The strength of an electromagnet can be increased by reducing the number of turns on the wire coil.

• True

• False

Tags

NGSS.MS-PS2-3

Indicate whether the statement is true or false. An electric motor is used to change mechanical energy into electrical energy.

• True

• False

Indicate whether the statement is true or false. Moving a wire through a magnetic field creates an electrical current in the wire.

• True

• False

Tags

NGSS.HS-PS2-5

Indicate whether the statement is true or false. Before alternating current from a power plant can enter a home, its voltage must be boosted or increased.

• True

• False

Indicate whether the statement is true or false. Paper clips and other objects that contain iron can become permanent magnets.

• True

• False

Tags

NGSS.MS-PS2-3

Indicate whether the statement is true or false. Current passing through an electromagnet is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the electromagnet.

• True

• False

Tags

NGSS.MS-PS2-3

Indicate whether the statement is true or false. A magnetic field exists around any current carrying wire.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Indicate whether the statement is true or false. Magnetic fields go from the north poles of magnets to the south poles of magnets.

• True

• False

Indicate whether the statement is true or false. A coil of wire carrying a current has a magnetic field.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5