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Non Contact Forces

Total questions: 28

Worksheet time: 16mins

Name
Class
Date
1.

Choose the 3 true statements.

a)

Like charges repel while opposite charges attract.

b)

Like charges attract while opposite charges repel.

c)

Opposite poles attract while like poles repel.

d)

Opposite poles repel while like poles attract.

e)

Gravitational force is always attractive.

2.

Two positive charges are placed next to each other. What will happen?

a)

The charges will attract.

b)

The charges will repel.

c)

The charges will not do anything.

d)

The charges will spin counterclockwise.

3.

Positive and negative charges will ______ each other.

a)

repel

b)

do nothing to

c)

attract

4.

Magnetic field lines run from-

a)

north to south.

b)

south to north.

c)

it depends on the type of metal.

d)

west to east.

5.

The strength of a magnetic field is at its maximum near the ______ of the magnet.

a)

Poles

b)

Midpoint

c)

Neutral points

d)

All of the answers shown

6.

Select the two factors that influence gravitational force.

a)

Distance

b)

Magnetic field

c)

Charge

d)

Mass

e)

Shape

7.

Identify the non-contact force: the attractive or repulsive force that comes from the poles of magnetic materials.

a)

Magnetic

b)

Electrostatic

c)

Gravitational

8.

Identify the non-contact force: the force that comes from charged particles.

a)

Magnetic

b)

Electrostatic

c)

Gravitational

9.

Identify the non-contact force: the attractive force that affects any object with mass.

a)

Magnetic

b)

Electrostatic

c)

Gravitational

10.

Two charged objects will repel each other in what situation? If more than one answer, choose ALL that apply.

a)

+ and +

b)

+ and -

c)

- and -

11.

The non-contact force at work here is __________ and the force is _______.

a)

attraction; magnetic

b)

repulsive; magnetic

c)

attraction; electrostatic

d)

repulsive; electrostatic

12.

The non-contact force at work here is __________ and the force is _______.

a)

attraction; magnetic

b)

repulsive; magnetic

c)

attraction; electrostatic

d)

repulsive; electrostatic

13.

The non-contact force at work here is __________ and the force is _______.

a)

attraction; magnetic

b)

repulsive; magnetic

c)

attraction; electrostatic

d)

repulsive; electrostatic

14.

The non-contact force at work here is __________ and the force is _______.

a)

attraction; magnetic

b)

repulsive; magnetic

c)

attraction; electrostatic

d)

repulsive; electrostatic

15.

An asteroid flies close to the Earth. Gravity-

a)

repels the asteroid away from the Earth.

b)

attracts the asteroid and Earth to each other.

c)

makes the asteroid spin rapidly.

d)

causes the asteroid to explode.

16.
Two like charges
a)
 neutralize each other.
b)
repel each other. 
c)
must be neutrons. 
d)
attract each other.
17.
When distance increases, electrostatic force ____________; we call this relationship ____________ proportional
a)
decreases;directly
b)
decreases;inversely
c)
increases;inversely
d)
increases;directly
18.

What charge is the electron?

a)

Logan-charged

b)

negative

c)

positive

d)

no charge (neutral)

19.
During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...
a)
the plastic strip acquired extra protons from the cotton.
b)
the plastic strip acquired extra protons from the charging process 
c)
protons were created as the result of the charging process
d)
the plastic strip lost electrons to the cotton during the charging process 
20.
A glass rod becomes positively charged when it is rubbed with silk. This net positive charge accumulates because the glass rod
a)
gains electrons
b)
loses electrons
c)
gains protons
d)
loses protons
21.
 A balloon is rubbed against a student's hair and then touched to a wall. The balloon sticks to the wall due to
a)
magnetic forces between the particles of the balloon and the particles of the wall
b)
electrostatic forces between the particles of the balloon and the particles of the wall
c)
magnetic forces between the particles of the wall
d)
electrostatic forces between the particles of the balloon
22.
When a plastic rod is rubbed with wool, the wool acquires a positive charge because
a)
protons are transferred from the wool to the rod
b)
protons are transferred from the rod to the wool
c)
electrons are transferred from the rod to the wool
d)
electrons are transferred from the wool to the rod
23.
A positively charged rod is held near the knob of a neutral electroscope. What best describes what will happen to the leaves?
a)
the leaves will spread apart and be positive
b)
the leaves will spread apart and be negative
c)
the leaves will stay closed and be positive
d)
the leaves will stay closed and be negative
24.

When one charge is positive and the other is negative, the electrostatic force will be

a)

positive

b)

negative

c)

neutral

d)

can't be answered

25.

Two positively charged objects would be expected to attract

each other.

a)

True

b)

False

26.

As the ruler becomes negatively charged, the cloth becomes _______ charged because it has more ________ than electrons.

(a)  

27.

State how an object can be neutral.

a)

The object contains more protons than electrons

b)

The object is not made of electricity

c)

The object contains the same number of protons and electrons

d)

The object contains no electrons

28.

What is the charge of a neutron?

a)

Positive

b)

Neutral

c)

Negative

d)

Zero

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