G5 U9 Electromagnets

A (head of the nail) is the ___-pole because S-pole is attracted to it.

• N-pole

• S-pole

• either is fine

• not in the choices

Tags

NGSS.3-PS2-3

B (end of the nail) is the ___-pole because N-pole is attracted to it.

• N-pole

• S-pole

• either is fine

• not in the choices

Tags

NGSS.3-PS2-3

What will happen to the compass needles (はり) if the switch is turned OFF?

• It will stay the same as above.

• It will be back to its original position.

• It is difficult to tell

• not in the choices

Tags

NGSS.3-PS2-3

What will happen to the compass needles if the battery is REVERSED?

• It will not change.

• It will be reversed.

• It is difficult to tell

• not in the choices

Tags

NGSS.3-PS2-3

Match the pictures and the words below.

• change in this way for electromagnet

• 
• change in this way for light bulb

• 
• 1 Amperes or

  1 アンペア

• 
• 3 Amperes or

  ３アンペア

• 

What can a Galvanometer tell you?

• The direction of the electricity (clockwise or counterclockwise).

• The strength of the electricity (1 Amperes, 2 Amperes...)

• The direction and the strength of the electricity

• not in the choices

Which is/are TRUE about the objects in the picture?

• 1. Both have an S-pole and an N-pole.

• 2. Both can attract iron paper clips.

• 1 and 2 are TRUE

• not in the choices

Tags

NGSS.3-PS2-3

Which is/are TRUE about the electromagnets ONLY?

• 1. The S-pole and the N-pole can be reversed.

• 2. The strength does not change.

• 1 and 2 are TRUE

• not in the choices

Tags

NGSS.3-PS2-3

What can we connect to a Galvanometer?

• batteries only

• switch, batteries, and devices like light bulbs, motors, and electromagnets

• it is hard to tell

• not in the choices

Tags

NGSS.4-PS3-2

If the you need to control (not change) the number of batteries, how can you make the electromagnet stronger?

• make more than 50 loops

• switch the galvanometer to light bulb

• remove the switch

• remove the galvanometer

Tags

NGSS.3-PS2-3