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Rollercoaster

Total questions: 45

Worksheet time: 2hrs 15mins

Name
Class
Date
1.

What is the definition of a force?

a)

Net force equal 0N and there is no change in the object's motion

b)

the overall force acting on an object after all forces are combined

c)

a push or a pull that acts on an object

d)

The force does not equal 0N, the object accelerates

2.

What do we call a force that has a net force of zero Newtons and the object does not change its motion?

a)

balanced force

b)

unbalanced force

c)

acceleration force

d)

net force

3.

What do we call a force that causes an object to accelerate?

a)

net force

b)

moving force

c)

acceleration force

d)

unbalanced force

4.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
5.
What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
6.
An _______ force must act on an object for it to CHANGE it's motion
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
7.
The unit of force is
a)
m/s
b)
m/s^2
c)
newton
d)
kg
8.
A train travels 25 km in .5 hrs. How fast is the train going?
a)
25 miles/hr
b)
5 miles/hr
c)
125 km/hr
d)
50 km/hr
9.
Pressure decreases when the surface area over which a force is applied increases
a)
True
b)
False
10.
Army tank tracks are useful for travelling through the mud because..
a)
they decrease the force the vehicle exerts on the ground
b)
they increase the force the vehicle exerts on the ground
c)
they decrease the pressure the vehicle exerts on the ground
d)
they increase the pressure the vehicle exerts on the ground
11.
Where would you find the largest pressure?
a)
At the bottom of the ocean
b)
At the top of Mt Everest
c)
Close to ground on the Scotch oval
d)
In a rockpool on the Great Barrier Reef
12.
Look at the pressure triangle. How do we calculate the force?
a)
f ÷ a
b)
f x p
c)
p x a
d)
f ÷ p
13.

Why won't you sink in mud if you wear boots?

a)

Because the surface area is larger creating less pressure.

b)

Has air in it to keep you floating.

c)

Because the mud won't want you.

14.

What is pressure?

a)

The amount of force exerted on a surface

b)

The surface area of an object

c)

The weight of an object

15.
What pressure does a 4000N horse exert on the ground if each foot is 10cm2?
a)
40 N/cm2
b)
100 N/cm2
c)
400 N/cm2
d)
10 N/cm2
16.
Look at the pressure triangle. How do we calculate the area?
a)
f ÷ a
b)
f x p
c)
p x f
d)
f ÷ p
17.
Convert 10 kg to Newtons
a)
0.098 N
b)
4.5 N
c)
100 N
d)
98 N
18.

__________ is the amount of matter in an object. It does not change regardless of location

a)

Weight

b)

Mass

19.

______________ is how heavy an object is. It is determined by the pull of gravity

a)

Weight

b)

Mass

20.

What unit of measurement would you use to measure the mass of a science textbook?

a)

miligrams

b)

grams

c)

kilograms

21.

What unit of measurement is most appropriate when measuring the mass of a school bus?

a)

ounces

b)

pounds

c)

grams

d)

kilograms

22.

Which is most likely the mass of a textbook?

a)

1 gram (g)

b)

100 grams (g)

c)

1 kilogram (kg)

d)

100 kilograms (kg)

23.

What could be the mass of a penny?

a)

4 grams

b)

4 pounds

c)

4 tons

d)

4 kilograms

24.
Which objects have a STRONG force of gravity?
a)
Objects with GREATER mass, like elephants
b)
Objects with LESS mass, like mice
25.
What is the SI unit used to measure force? 
a)
pounds 
b)
grams 
c)
newtons 
d)
friction
26.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
27.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
28.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
29.
What does this tool measure?
a)
weight
b)
meters
c)
mass
d)
force
30.

Which of the following has the SI unit kilogram?

a)

weight

b)

mass

31.

Which of the following would have the strongest gravitational pull?

a)

a desk

b)

a semi truck

c)

Earth

d)

Jupiter

32.
We use levers to make work easier.?
a)
True
b)
False
33.
a)

15 cm3

b)

50 cm3

c)

150 cm3

d)

180 cm3

34.

Density is a physical property of matter and can be used to classify substances. Density is calculated by which of the following?

a)

d=v/m

b)

d=m/v

c)

d=w/v

d)

d=m/w

35.
a)

2.5 g/cm3

b)

25 g/cm3

c)

250 g/cm3

d)

2,500 g/cm3

36.
A cube has sides that are all the same length.
a)
True
b)
False
37.
The mass of an object is 30 g.  The volume is 5 mL.  What is the density of this object?
a)
6 g/cm
b)
6 g/mL
c)
6
38.
What is the density of an object that has a volume of 30 mL and 120 grams?
a)
40 mL
b)
4 g/mL
c)
40 g/cm3
d)
4 g 3
39.
The density of this material is 2 g/cm3.
There are 24 cm3  Find the total mass.
a)
12 grams
b)
48 grams
c)
12 g/cm3
d)
48 g/cm3
40.
What units are used to measure mass of an object?
a)
cm
b)
cm3
c)
g
d)
g/cm3
41.
What is the formula to calculate density
a)
mass/volume
b)
mass x volume
c)
mass + volume
d)
mass - volume
42.
What two factors do you need to calculate density?
a)
matter and mass
b)
matter and volume
c)
mass and volume
d)
weight and volume
43.

The amount of space an object takes up is called _________.

a)

mass

b)

volume

c)

chemical characteristic

d)

weight

44.

Multiplying L x W x H is a way to find the _____ of a regular shape object.

a)

area

b)

volume

c)

weight

d)

length

45.

What is the density of an object which has a mass of 60 grams and a volume of 20 cm3 ?

a)

30 g / cm3

b)

3 g / cm3

c)

40 g/ cm3

d)

4 g/ cm3

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