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gravity and motion

Total questions: 147

Worksheet time: 3hrs 31mins

Name
Class
Date
1.

The strength of the force of gravity depends on

a)

The weight of the objects and their speeds

b)

The distance of the objects and their speeds

c)

The masses of the objects and the distance between them

d)

Mass of the objects and their speeds

2.

The moon's gravity is only a fraction of the Earth's gravity. Which fraction represents the moon's gravity compared to Earth?

a)

1/3

b)

1/6

c)

1/4

d)

1/2

3.

The force of gravity gets weaker as the distance between objects increases.

a)

True

b)

False

4.

How long is a rotation of Earth?

a)

365 days (1 year)

b)

48 hours

c)

1 minute

d)

24 hours (1 day)

5.

The force that attracts all objects toward each other is called

a)

motion

b)

inertia

c)

gravity

d)

magnetism

6.

The scientific law that states that every object in the universe attracts every other object.

a)

Law of Universal Gravitation

b)

Newton's First Law of Motion

c)

Force

d)

The Law of the Universe

7.

A measure of the force of gravity acting on an object.

a)

mass

b)

weight

c)

inertia

d)

force

8.

The tendency of an object to resist a change in motion.

a)

inertia

b)

mass

c)

motion

d)

weight

9.

Force is...

a)

a push or pull

b)

a push only

c)

a pull only

10.

Force is...

a)

a push or pull

b)

a push only

c)

a pull only

11.

Gravity ...

a)

repels all objects away from each other

b)

attracts all objects towards each other

c)

the amount of matter in an object

12.

Newton's Law of Universal Gravitation

a)

a push or pull

b)

all objects repel every other object

c)

all object attract every other object

13.

Mass is...

a)

the amount of matter in an object

b)

the weight of an object

c)

measure of the force of gravity

14.

Weight is ...

a)

how tall something is

b)

measure of inertia on an object

c)

measure of the force of gravity on an object

15.

Newton's first law of motion

a)

amount of matter in an object

b)

every object in the universe attracts every other object

c)

object at rest will stay at rest and object in motion will stay in motion

16.

Inertia is the ...

a)

tendency of an object to resist a change in motion

b)

pus or pull of an object

c)

the amount of matter in an object

17.

The strength of the force of gravity depends on ...

a)

distance between the two objects

b)

mass of the two objects

c)

mass of objects and distance between them

18.

What can change? An object's weight or mass?

a)

weight

b)

mass

19.

As distance increases the force of gravity ...

a)

stays the same

b)

increases

c)

decreases

20.

You weigh ___________ on the moon.

a)

the same

b)

more

c)

less

21.

An object with greater inertia ______ to start/stop than one with less inertia.

a)

the same

b)

easier

c)

harder

22.

Gravity ...

a)

repels all objects away from each other

b)

attracts all objects towards each other

c)

is the amount of matter in an object

23.
When pressure is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of the fluid. This fact is called________.
a)
Pascal's Principle
b)
Newton's Principle
c)
Archimedes' Principle
d)
Bernoulli's Principle
24.
This is a measurement of the amount of matter, or 'stuff', in an object or substance.
a)
volume
b)
density
c)
mass
d)
length
25.
What do we call the the amount of force exerted on a certain area?
a)
fluid
b)
pressure
c)
buoyant
26.
The pressure resulting from a force of 50 N exerted over an area of 5 m2 is
a)
10 N
b)
0.1 N
c)
10 N/m2
d)
0.1 Pa
27.
In what direction(s) does air exert pressure?
a)
everywhere
b)
no where
c)
there is no pressure
d)
downward
28.

What is the formula for pressure?

a)

P=A/F

b)

P=FA

c)

P=F/A

29.

What is the SI unit use for hydraulic pressure?

a)

Kg/m3

b)

Pa

c)

Litre

d)

Kilometer

30.

To calculate pressure you need to know ...

a)

Force & Volume

b)

Density & Volume

c)

Power & Area

d)

Force & Area

31.

A person wearing boots and a person wearing stilleto heels stand on a wooden floor. They both have the same weight. Which person exerts a greater pressure on the floor?

a)

boots because they have a larger surface area

b)

stiletto heels because they have a larger surface area

c)

boots because they have a smaller surface area

d)

stiletto heels boots because they have a smaller surface area

32.

When force increases...

a)

pressure increases

b)

pressure decreases

c)

pressure stays the same

d)

pressure increases then decreases

33.

When area increases...

a)

pressure increases

b)

pressure decreases

c)

pressure stays the same

d)

pressure increases then decreases

34.

Any substance that can easily flows and therefore can easily change shape.

a)

Fluid

b)

Liquid

c)

Gas

d)

Solid

35.
Water pressure increases as depth increases. 
a)
True
b)
False
36.
Which box has a higher density?  
a)
Box A
b)
Box B
c)
cannot be determined
d)
they are the same
37.
What are the states of matter?
a)
solid, liquid, and juice
b)
solid and liquid
c)
solid and gas
d)
solid, liquid, and gas
38.
If an object sinks in a fluid, _____.
a)
the density of the fluid is greater than the density of the object
b)
the density of the fluid is less than the density of the object
c)
the density of the fluid is equal to the density of the object
d)
density has nothing to do with whether an object sinks or floats, only which state of matter the object is
39.
What is the secret of how a ship floats?
a)
its size 
b)
its hollow shape 
c)
the amount of cargo it carries
d)
number of passengers on board
40.
How do you find the volume of an irregular shaped solid?
a)
water displacement
b)
weighing it
c)
using a balance
d)
multiplying the length by its sides
41.
How does air pressure change as you go from the top of a mountain to sea level?
a)
pressure increases
b)
pressure decreases
c)
pressure stays the same
d)
it depends of the weather
42.

A state of matter in which a substance has neither a definite shape or volume

a)

liquid

b)

gas

c)

solid

d)

viscosity

43.

These statements are about the particle model of matter. Which one is not correct?

a)

Liquids are hard to compress because their particles are very close together

b)

Gases expand to fill their container because there are only weak forces between the particles

c)

Liquids can flow because there are only very weak forces between the particles

d)

Solids have a fixed shape because there are very strong forces between the particles

44.

Why do solids expand when they are heated?

a)

The particles get bigger

b)

The particles vibrate more and take up more space

c)

The particles vibrate more and get closer together

d)

The particles stick together

45.

Density is

a)

the weight of a fixed mass of something

b)

the volume of a fixed weight of something

c)

the weight of a fixed volume of something

d)

the mass of a fixed volume of something

46.

The term fluids generally applies to:

a)

solid and liquid

b)

liquid and gas

c)

solid and plasma

d)

water only

47.

Which statements below is INCORRECT about liquids and gases?

a)

Liquids possess greater kinetic energy than gases.

b)

Gases have weak molecular force of attraction while liquids have a moderate force of attraction.

c)

Liquids have a definite size where gases can expand to fill any closed container.

d)

Gases are easily compressed where liquids are not.

48.

Density is:

a)

the weight of a fixed mass of something.

b)

the volume of a fixed weight of something.

c)

the weight of a fixed volume of something.

d)

the mass of a fixed volume of something.

49.

When liquid water changes into steam it is:

a)

evaporating.

b)

condensing.

c)

melting.

d)

dissolving.

50.

In what way is ice different to other solid materials?

a)

It is colder.

b)

It occurs naturally.

c)

Ice (solid water) is less dense than liquid water.

d)

The density of ice does not change when it is cooled down.

51.

Which of these forces is the upthrust?

a)

A

b)

B

c)

C

d)

D

52.

Why does a hot air balloon float in air?

a)

Air is less dense than water.

b)

The density of hot air is less than the density of cold air.

c)

Air is denser on cold days.

d)

The overall density of the balloon and its basket is less than the density of the air.

53.

The air resistance of a car can be reduced by:

a)

making the car bigger.

b)

giving it a streamlined shape.

c)

making the car heavier.

d)

putting a roof box on it.

54.

A car needs a forwards force to keep moving because:

a)

everything needs a force to keep moving.

b)

gravity is trying to slow it down.

c)

it needs a force to balance friction and air resistance.

d)

weight balances friction.

55.

Gases diffuse fast because

a)

The gas particles are very apart from each other

b)

The gas particles have high kinetic energy

c)

The gas particles are very heavy

d)

Gas particles are very small

56.
In what direction(s) does air exert pressure?
a)
everywhere
b)
no where
c)
there is no pressure
d)
downward
57.

Rate of diffusion of gases depend on

(a)  

58.

As the water molecules in a confined container move around, they (a)   with the walls of the container

59.

Any substance that can easily flow and therefore can easily change shape.

a)

Fluid

b)

Liquid

c)

Gas

d)

Solid

60.

When you go deeper inside a swimming pool, the pressure experienced by you

a)

increases

b)

decreases

c)

stays the same

61.

When a drop of black ink is put in a glass of water the water turns black. This is because of

(a)  

62.

There are two glasses, one containing hot water and the other containing water at room temperature. Few drops of red dye is added to both the glasses. In which case will the water turn red faster?

4 lines
63.

Atmospheric pressure is highest at

a)

Mean sea level

b)

Above sea lvel

c)

Below sea level

64.

When a pressure cooker with its lid closed is heated, the pressure inside

a)

Increases

b)

Decreases

c)

Remains the same

d)

Becomes zero

65.

In order for a fluid to flow, it will travel from an area of __________ pressure to ____________ pressure

a)

high to low

b)

low to high

c)

equal

d)

all of the above

66.

Why is fluid pressure exerted evenly in all directions?

a)

because you push down evenly

b)

pressure is flowing and bumping the outside of the container

c)

particles of fluids are constantly moving and collide with each other

d)

pressure is moving at a slow speed

67.

All of these are reasons that the canoe would float except

a)

the shape of the canoe

b)

the atmospheric pressure at that altitude

c)

the density of the material that the canoe is made of

d)

the number of people in the canoe

68.

What are two things you need to know to calculate pressure? (There are two answers)

a)

mass of the object

b)

gravity

c)

force

d)

area over which force is applied

e)

velocity

69.

Which of the following are the SI unit for pressure (more than 1 answer)

a)

N/m2

b)

Pa

c)

Pascal

d)

Newton

70.

The pressure exerted by a force of 35 N over an area of 5 cm2?

a)

40 Pa

b)

7 Pa

c)

30 Pa

d)

175 Pa

71.

Ice floats in water because

a)

it is smaller

b)

it is less dense than water

c)

it is more dense that water

d)

everything floats in water

72.

Which of the following is NOT an example of Bernoulli's principle?

a)

Smoke rising up a chimney

b)

an atomizer spraying perfume

c)

ice floating in water

d)

airplane wings lifting the airplane

73.

A hydraulic system is described by what principle?

a)

Bernoulli's

b)

Pascal's

c)

Pressure

d)

Newton's

74.

What is the equation for density?

a)

force / volume

b)

mass / volume

c)

volume / mass

d)

mass X volume

75.

The pressure in the fluid decreases as the speed of the fluid _____

a)

stays the same

b)

decreases

c)

increases

d)

they are not related

76.

What is atmospheric pressure?

a)

the pressure exerted by oxygen on a given surface

b)

the pressure exerted by the gas in Earth's atmosphere

c)

the pressure from the clouds

d)

The pressure that space pushes down on Earth

77.

True or False: A fluid is a substance that takes up the shape of its container

a)

True

b)

False

78.

True or False: Archimedes Principle states that the buoyant force on an object is equal to the volume of fluid displaced

a)

True

b)

False

79.

A forestry worker accidentally strikes a pipe with the end of a pickaxe while trying to dig a hole. If  the pickaxe strikes with a force of 2000 N and the end of the pickaxe measures 0.02 m by 0.04m,  how much pressure is exerted on the pipe by the pickaxe?

a)

100,000 Pa

b)

33,333.33 Pa

c)

1.6 Pa

d)

2,500.000 Pa

80.

The large piston in a hydraulic lift has an area of 220 cm2. What force must be applied to the small piston with an area of 2.0 cm2 in order to raise a car the mass of 1500 N?

a)

13.6 N

b)

165,000 N

c)

19.4 N

d)

16.3 N

81.
Fluids can also include__ and__. 
a)
solids and liquids
b)
solids and gases
c)
liquids and gases
d)
liquids
82.
In liquids, the volume stays the same no matter what shape the container is.
a)
True
b)
False
83.
In gases, the volume does stay the same when placed in different containers
a)
True
b)
False
84.
What is the amount of force per unit of area applied to an object’s surface?
a)
fluid
b)
pressure
c)
atmospheric pressure
d)
density
85.
What is the equation used to calculate pressure?
a)
pressure= force/mass
b)
pressure =mass/volume
c)
pressure=area/force
d)
pressure=force/area
86.
What is the unit of measurement for pressure?
a)
pascal
b)
grams
c)
milliters
d)
meters
87.
A fluid applies pressure perpendicular to all sides of an object in contact with the fluid.
a)
True
b)
False
88.
Pressure decreases when the surface area over which a force is applied increases
a)
True
b)
False
89.
Pressure increases when the surface area over which a force is applied increases.
a)
True
b)
False
90.
What is the ratio of weight of all the air above you to your surface area 
a)
pressure
b)
fluids
c)
density
d)
atmospheric pressure
91.
Atmospheric pressure increases as you move towards lower elevations and decreases as you move into higher elevations.
a)
True
b)
False
92.
In underwater pressure, as the depth increases, so does the pressure.
a)
True
b)
False
93.
Marianna Trench has a pressure of __.
a)
104,500 Pa
b)
108,600 N
c)
108,600 Pa
d)
104,500 N
94.
Underwater pressure also helps to explain why the wall of a dam is thicker at the bottom than the top because it applies more pressure at the bottom than at the top. 
a)
True
b)
False
95.
When comparing two or more fluids, the fluid that weighs more is considered a lot denser than the other fluid(s).
a)
True
b)
False
96.
What is the equation used to calculate density?
a)
density=volume/mass
b)
density=force/area
c)
density=mass/volume
d)
density=force/volume
97.
What is the unit of measurement for density?
a)
pascals
b)
meters
c)
grams
d)
grams per cubic centimeter (g/cm³)
98.
Molecules in most solids are closer together than the molecules in liquids or gases
a)
True
b)
False
99.
Liquids and gases are considered denser than solids.
a)
True 
b)
False
100.
What is the density of water?
a)
1.0 g/cm³
b)
1.5 g/cm³
c)
2.0 g/cm³
d)
2.5 g/cm³
101.
What is any substance than can flow and take the shape of the container that holds it
a)
pressure
b)
fluid
c)
atmospheric pressure 
d)
density
102.
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
103.
If the horse reared up on 2 legs what effect would it have on the pressure?
a)
it will exert half the pressure it did before
b)
it will exert the same pressure it did before
c)
it will exert twice the pressure it did before
d)
it will exert four times the pressure it did before
104.
What is the equation used to calculate pressure?
a)
pressure= force/mass
b)
pressure =mass/volume
c)
pressure=area/force
d)
pressure=force/area
105.
What is the unit of measurement for pressure?
a)
pascal
b)
grams
c)
milliters
d)
meters
106.
Pressure decreases when the surface area over which a force is applied increases
a)
True
b)
False
107.
Atmospheric pressure increases as you move towards lower elevations and decreases as you move into higher elevations.
a)
True
b)
False
108.
Which of the statements is true?
a)
The bottom of the boot exerts more pressure than the shoe as a result of an increase in surface area.
b)
The bottom of the shoe exerts more pressure than the boot as a result of an decrease in surface area.
c)
The bottom of the shoe exerts the same pressure as the bottom of the boot.
109.
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
110.
What is the instrument that measures air pressure called?
a)
Graduated cylinder
b)
Barometer
c)
Force scale
d)
Anemometer
111.
Fluids can also include__ and__. 
a)
solids and liquids
b)
solids and gases
c)
liquids and gases
d)
liquids
112.

(a)   is the result of a force that is distributed over an area

113.

The formula for Pressure is....Pressure = (a)  

114.

A (a)   is a substance that assumes the shape of its container OR any substance where the molecules move.

115.

Fluid Pressure increases as depth (a)  

116.

Air Pressure decreases as the altitude (a)  

117.

According to ____________ ____________, a change in pressure at any point in a fluid is transmitted equally and in all directions throughout the fluid

(a)  

118.

In a _________ __________, an increased output force is produced because a constant fluid pressure is exerted on a larger area of the output surface.

(a)  

119.

(a)   Principle says that as the speed of a fluid increases, the pressure within the fluid decreases.

120.

(a)   is an upward force that is caused by a difference in pressure.

121.

(a)   is the ability of a fluid to exert an upward force on an object placed in it.

122.

A _________ _______ is an upward force that acts on any object in a fluid

(a)  

123.

(a)   principle says that the bouyant force on an object is equal to the weight of the displaced fluid.

124.

(a)   is the ratio of mass to volume (M/V) and will determine whether or not something floats or sinks in a fluid.

125.

An object (a)   if it is less dense than the fluid it is in.

126.

An object (a)   if it is more dense than the fluid it is in.

127.

 Pressure is

a)

 ForceArea\frac{Force}{Area}  

b)

AreaForce\frac{Area}{Force}  

c)

MassVolume\frac{Mass}{Volume}  

d)

VolumeMass\frac{Volume}{Mass}  

128.

hypothesis that continents are in constant motion

a)

continental drift

b)

Pangaea

c)

seafloor spreading

d)

plate tectonics

129.

naturally preserved remains, imprints, or traces of organisms

a)

Pangaea

b)

Glossopteris

c)

fossil

d)

subduction

130.

middle layer of Earth situated between the crust above and the core below

a)

crust

b)

lithosphere

c)

athenosphere

d)

mantle

131.

ancient supercontinent, composed of land that forms today's continents

a)

Glossopteris

b)

Pangaea

c)

Laurasia

d)

Gondwanaland

132.

event in which magnetic field reverses direction

a)

magnetic reversal

b)

magnetism

c)

normal polarity

d)

reversed polarity

133.

mountain range located on the seafloor in the middle of the ocean

a)

Himalayas

b)

Andes

c)

mid-ocean ridge

d)

Mid-Atlantic ridge

134.

conforming to a type, standard, or regular pattern

a)

normal

b)

reversed polarity

c)

normal polarity

d)

magnetic reversal

135.

today's magnetic field; magnets orient themselves to point north

a)

magnetic reversal

b)

reversed polarity

c)

normal polarity

d)

magnetism

136.

magnetic field in which magnets orient themselves to point south

a)

reversed polarity

b)

magnetism

c)

normal polarity

d)

magnetic reversal

137.

new ocenaic crust forms at a mid-ocean ridge as old oceanic crust moves away

a)

mid-ocean ridge

b)

slab-pull

c)

ridge push

d)

seafloor spreading

138.

circulation of material caused by differences in temperature and density

a)

conduction

b)

convection

c)

radiation

d)

subduction

139.

where two plates collide

a)

convergent plate boundary

b)

divergent plate boundary

c)

transform plate boundary

d)

slab pull

140.

where two plates separate

a)

transform plate boundary

b)

ridge push

c)

divergent plate boundary

d)

convergent plate boundary

141.

cold, rigid outermost rock layer of Earth

a)

lithosphere

b)

athenosphere

c)

crust

d)

mantle

142.

capable of being molded of changing shape

a)

bendable

b)

deformation

c)

plastic

d)

normal

143.

theory that Earth's surface is made up of rock plates that move with respect to each other

a)

continental drift

b)

Pangaea

c)

plate tectonics

d)

subduction

144.

force created by rising mantle of ocean ridges that creates potential for plates to move away from the ridge

a)

ridge push

b)

slab pull

c)

plate tectonics

d)

subduction

145.

force created by sinking of a plate, or slab, that pulls on the rest of the plate

a)

ridge push

b)

subduction

c)

slab pull

d)

convection

146.

sinking of a denser plate below a more bouyant plate at a convergent plate boundary

a)

subduction

b)

ridge push

c)

slab pull

d)

lithosphere

147.

where two plates slide past each other

a)

convergent plate boundary

b)

divergent plate boundary

c)

transform plate boundary

d)

ridge push