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UNIT 1 FORCES AND THEIR EFFECTS

Total questions: 104

Worksheet time: 53mins

Name
Class
Date
1.

What is a force?

a)

it is anything which is capable of changing the state of

motion or rest of a body, or deforming it.

b)

It is anything that occupies a space and has mass and volume.

c)

It is a device that is used to measure forces and to weigh bodies.

d)

is a change of position of a body over time with respect to a reference system which is considered fixed.

2.

Would it be possible to walk with no friction?

a)

YES

b)

NO

3.

It is possible to walk with no friction

a)

TRUE

b)

FALSE

4.

It is possible to walk with friction

a)

TRUE

b)

FALSE

5.

What theory explains the origins of the Universe?

a)

the Big Bang theory

b)

Hookes theory

c)

Vanishing dimensions theory

d)

Rainbow gravity theory

e)

Hubble bubble (astronomy)

6.

Electrical forces have forces of repulsion and attraction

a)

TRUE

b)

FALSE

7.

Electrical forces don't have forces of repulsion and attraction

a)

TRUE

b)

FALSE

8.

Classify the following actions into those produced by a force through contact and those produced by a force at a distance:

a)

Force through contact

b)

Force at a distance

9.

Classify the following actions into those produced by a force through contact and those produced by a force at a distance:

a)

Force through contact

b)

Force at a distance

10.

Classify the following action into those produced by a force through contact and those produced by a force at a distance:

a)

Force through contact

b)

Force at a distance

11.

Classify the following action into those produced by a force through contact and those produced by a force at a distance:

a)

Force through contact

b)

Force at a distance

12.

Classify the following actions into those produced by a force through contact and those produced by a force at a distance:

a)

Force through contact

b)

Force at a distance

13.

Classify the following action into those produced by a force through contact and those produced by a force at a distance:

a)

Force through contact

b)

Force at a distance

14.

Classify the following action into those produced by a force through contact and those produced by a force at a distance:

a)

Force through contact

b)

Force at a distance

15.

Classify the following action into those produced by a force through contact and those produced by a force at a distance:

a)

Force through contact

b)

Force at a distance

16.

Classify the object

a)

rigid

b)

plastic

c)

elastic

17.

Classify the object

a)

rigid

b)

plastic

c)

elastic

18.

Classify the object

a)

rigid

b)

plastic

c)

elastic

19.

Classify the object

a)

rigid

b)

plastic

c)

elastic

20.

Classify the object

a)

rigid

b)

plastic

c)

elastic

21.
An object is _____ if its position changes relative to another object.
a)
in motion
b)
at reset
c)
a frame of refence
d)
magical
22.
A place or object used for comparison to determine if another object is in motion is called a
a)
comparison point
b)
reference point
c)
point of view
d)
motion detector
23.
Speed =
a)
distance / time
b)
time / distance
c)
distance * time
24.
You walk 10 meters to math class in 20 seconds. Your average speed is
a)
2 m/s
b)
0.5 m/s
c)
200 m/s
d)
5 m/s
25.
Change in speed over a given period of time is
a)
velocity
b)
motion
c)
speed
d)
acceleration
26.
The rate at which velocity changes is called 
a)
motion
b)
average speed
c)
instantaneous speed
d)
acceleration
27.
What is the SI unit for acceleration?
a)
m/s
b)
m
c)
m/s2
d)
s
28.
What is the SI unit for speed
a)
Km
b)
s
c)
m/s
d)
m/s2
29.
When something has speed in a certain direction it is called ___________.
a)
motion
b)
position
c)
velocity
d)
speed
30.
Acceleration of an object happens when things ________
a)
slow down
b)
go faster
c)
change direction (turn)
d)
All of the above
31.
LT1 The process of changing distance or position from another object
a)
reference point
b)
location
c)
acceleration
d)
motion
32.
LT1 Which would NOT make a good reference point? 
a)
Becker Middle School
b)
A chair
c)
A moving child
33.
LT2 The distance an object travels per unit of time (how far, how fast) is called: 
a)
direction
b)
speed
c)
acceleration
d)
deceleration
34.
LT5: The rate at which velocity CHANGES is: 
a)
acceleration
b)
speed
c)
direction
d)
physics
35.

MOTION: What is an imaginary line joining the positions which the mobile object goes through?

a)

Space covered

b)

trajectory

c)

displacement

d)

position

e)

kinematics

36.

MOTION: What is the distance covered by the mobile object on the trajectory?

a)

Space covered

b)

velocity

c)

displacement

d)

position

e)

kinematics

37.

MOTION: What is the distance in a straight line between two positions of the mobile object?

a)

Space covered

b)

velocity

c)

displacement

d)

position

e)

kinematics

38.

MOTION:What is the location of the mobile object in space wiht respect to the reference point?

a)

Space covered

b)

velocity

c)

displacement

d)

position

e)

kinematics

39.

MOTION: What is the field of physics which studies the motion of bodies without taking into account the causes of this motion?

a)

Space covered

b)

trajectory

c)

displacement

d)

position

e)

kinematics

40.

How is a body in motion called?

a)

moving body

b)

material body

c)

mobile

d)

moving mobile

41.

How is velocity represented mathematically?

a)

v

b)

s

c)

t

d)

a

e)

x

42.

How is acceleration represented mathematically?

a)

v

b)

s

c)

t

d)

a

e)

x

43.

How is space covered represented mathematically?

a)

v

b)

s

c)

t

d)

a

e)

x

44.

How is position represented mathematically?

a)

v

b)

s

c)

t

d)

a

e)

x

45.

How is time represented mathematically?

a)

v

b)

s

c)

t

d)

a

e)

x

46.

Identify 1.

a)

position 1

b)

starting line

c)

postition2

d)

displacement

e)

trajectory

47.

Identify 2.

a)

position 1

b)

starting line

c)

postition2

d)

displacement

e)

trajectory

48.

Identify 5.

a)

position 1

b)

starting line

c)

postition2

d)

displacement

e)

trajectory

49.

Identify 3.

a)

position 1

b)

starting line

c)

postition2

d)

displacement

e)

trajectory

50.

Identify 4.

a)

position 1

b)

starting line

c)

postition2

d)

displacement

e)

trajectory

51.

What does this represent?

a)

trajectory

b)

average velocity

c)

acceleration

d)

displacement

52.

Position - time graph. In this graph the mobile object is

a)

at rest

b)

distance increase over time from point of origin

c)

distance decreases over time to point of origin

53.

Position - time graph. In this graph the mobile object is

a)

at rest

b)

distance increase over time from point of origin

c)

distance decreases over time to point of origin

54.

Position - time graph. In this graph the mobile object is

a)

at rest

b)

distance increase over time from point of origin

c)

distance decreases over time to point of origin

55.

Velocity - time graph: What does the graph indicate with reference to the velocity of the mobiel object?

a)

The veolcity (v) does not change over time (t)

b)

The velocity (v) increases uniformly over time (t)

56.

Velocity - ime graph: What does the graph indicate with reference to the velocity of the mobiel object?

a)

The veolcity (v) does not change over time (t)

b)

The velocity (v) increases uniformly over time (t)

57.

Which two factors influence the force of friction?

a)

volume and mass

b)

weight and volume

c)

roughness of surfaces and weight

d)

roughness of surfaces and mass

58.

For the same weight of the supported body, the rougher the surfaces, the greater the force of friction bewteen them.

a)

TRUE

b)

FALSE

59.

For the same weight of the supported body, the rougher the surfaces, the lesser the force of friction bewteen them.

a)

TRUE

b)

FALSE

60.

For the same roughness of surfaces, the greater the weight of the supported body, the greater the force of friction between them.

a)

TRUE

b)

FALSE

61.

For the same roughness of surfaces, the greater the weight of the supported body, lesser the force of friction between them.

a)

TRUE

b)

FALSE

62.

Identify what a force at a distance is?

a)

it can only be appreciated when at least one of the bodies has a very large mass.

b)

two bodies are attracted just through the fact of having mass.

c)

for the force to exist, the bodies do not need to be in physical contact.

63.

Identify what an attractive force is?

a)

it can only be appreciated when at least one of the bodies has a very large mass.

b)

two bodies are attracted just through the fact of having mass.

c)

for the force to exist, the bodies do not need to be in physical contact.

64.

Identify what a very weak force is ?

a)

it can only be appreciated when at least one of the bodies has a very large mass.

b)

two bodies are attracted just through the fact of having mass.

c)

for the force to exist, the bodies do not need to be in physical contact.

65.

When the mass of one of the bodies is doubled, the force doubles.

a)

TRUE

b)

FALSE

66.

When the distance between the bodies is doubled, the force becomes a quarter.

a)

TRUE

b)

FALSE

67.

When the mass of one of the bodies is same, the force doubles.

a)

TRUE

b)

FALSE

68.

When the distance between the bodies is the same, the force becomes a quarter.

a)

TRUE

b)

FALSE

69.

What is responsible for the order in the Universe?

a)

electricity

b)

mass

c)

heat

d)

gravity

70.

The physics of space and the Earth share the same universal law

a)

TRUE

b)

FALSE

71.

Satellites revolve around their planets .

a)

TRUE

b)

FALSE

72.

Planets revolve around their stars

a)

TRUE

b)

FALSE

73.

Stars revolve around their planets.

a)

TRUE

b)

FALSE

74.

Galaxies revolve around other galaxies.

a)

TRUE

b)

FALSE

75.

Galaxies revolve around planets.

a)

TRUE

b)

FALSE

76.

Stars revolve around their planets.

a)

TRUE

b)

FALSE

77.

What is the amount of matter in a body?

a)

Volume

b)

temperature

c)

weight

d)

mass

78.

What is the force with which the Earth attracts a body?

a)

Volume

b)

temperature

c)

weight

d)

mass

79.

What is the space that occupies a material body?

a)

Volume

b)

temperature

c)

weight

d)

mass

80.

Mass is a basic unit.

a)

TRUE

b)

FALSE

81.

Mass is a derived unit.

a)

TRUE

b)

FALSE

82.

Weight is a basic unit.

a)

TRUE

b)

FALSE

83.

Weight is a derived unit.

a)

TRUE

b)

FALSE

84.

Mass is invariable; it does not change with the place in the Universe where the body is found.

a)

TRUE

b)

FALSE

85.

Mass is variable; it depends on the gravity in the place where it is measured.

a)

TRUE

b)

FALSE

86.

Weight is variable; it depends on the gravity in the place where it is measured.

a)

TRUE

b)

FALSE

87.

Weight is invariable; it does not change with the place in the Universe where the body is found.

a)

TRUE

b)

FALSE

88.

The unit of weight in the SI is the kilogram (kg).

a)

TRUE

b)

FALSE

89.

The unit of mass in the SI is the kilogram (kg).

a)

TRUE

b)

FALSE

90.

The unit of mass in the SI is the newton (N)

a)

TRUE

b)

FALSE

91.

The unit of weight in the SI is the newton (N)

a)

TRUE

b)

FALSE

92.

When is a positive electrical charge produced?

a)

when atoms lose some of their electrons.

b)

when atoms gain some electrons.

93.

When is a negative electrical charge produced?

a)

when atoms lose some of their electrons.

b)

when atoms gain some electrons.

94.

Whe atoms have the same number of electrons and protons, we say that it is ...

a)

postive

b)

negative

c)

neutral

95.

Identify the parts of the atom: 3

a)

neutron

b)

proton

c)

electron

96.

Identify the parts of the atom: 1

a)

neutron

b)

proton

c)

electron

97.

Identify the parts of the atom: 2

a)

neutron

b)

proton

c)

electron

98.

Electrical charges with the same signs

a)

repel each other

b)

attract each other

99.

Electrical charges with opposite signs

a)

repel each other

b)

attract each other

100.

What would happen to these magnets?

a)

repel each other

b)

attract each other

101.

What would happen to these magnets?

a)

repel each other

b)

attract each other

102.

What would happen to these magnets?

a)

repel each other

b)

attract each other

103.

What is the area in space where its forces can be seen?

a)

magnetic field

b)

field lines

c)

magnet

d)

north pole

104.

What is a magnetic field is represented by some lines called?

a)

latitude

b)

field lines

c)

magnet

d)

longitude

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