Unit 6 Non Contact Forces Review

Match the following

• attract

• neutral charges

• repel

• opposite charges

• neither attract or repel

• like charges

What could Coulomb's law tell us about these interactions?

• The objects in interaction A are closer that in interaction B

• The objects in A are repulsing and the objects in B are attracting

• The objects in A are smaller than B

• In interaction A, object 2 has a negative charge; but, in interaction B, it has a positive charge.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What can we tell from this chart?

• Negative charges are smaller than positive charges

• The objects in interaction A are farther apart than in interaction B.

• Repulsive forces are weaker than attractive forces.

• The objects in interaction A are smaller than in interaction B.

Tags

NGSS.MS-PS2-3

Why is rubber a good insulator?

• The atoms in rubber do not hold on tightly to their positively charged particles.

• The atoms in rubber don't hold on tightly to their negatively charged particles

• The atoms in rubber hold on tightly to their negatively charged particles.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Which statement describes a difference between insulators and conductors?

• Insulators have high conductivity

• Insulators can transmit electric current

• Insulators have high resistance while conductors have low resistance

• Insulators are non-magnetic while conductors are magnetic

Circuit A has a voltage of 20 V, and circuit B has a voltage of 10 V. Which statement about the circuits is correct?

• If the resistance in circuit A is greater than the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.

• If the resistance in circuit A equals the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.

• If the resistance in circuit A is equal to the resistance in circuit B, then the power in circuit A is greater than the power in circuit B.

• If the current in circuit A is greater than the current in circuit B, then the resistance in circuit A is less than the resistance in circuit B.

Tags

NGSS.MS-PS2-3

How would adding one of these affect the current in a circuit

• The current would increase

• The current would decrease

• The current would not change

• There would be a fire

Tags

NGSS.MS-PS2-3

What type of energy tranformations are occuring here?

Tags

NGSS.MS-PS3-3

Label the circuit

e

d

c

b

a

Bulb

Voltmeter

Resistor

Ammeter

Battery

Why isn't this light on?

Tags

NGSS.MS-ETS1-1