WorksheetsFIRST QUARTER SCIENCE 8 REVIEW GAME
Total questions: 40
Worksheet time: 33mins
The sum of all the forces acting on an object is called __________________.
unbalanced force
contact force
net force
balanced force
In Newton’s third law, the action and reaction forces _______________
are not necessarily equal
are inversely proportional
act on the same body
act on different bodies
A body of mass m is being accelerated by a net force F. If the net force is reduced to one-half, then its acceleration is ______________
halved
doubled
decreased to one-fourth
increased four times
An object weighs 30 N on earth. A second object weighs 30 N on the moon. Which has a greater mass?
neither of the two
They have the same mass
The one on earth
The one on the moon
As a 350 N lady sits on the floor, the floor exerts a force on her equal to ______________.
350 N
700 N
250 N
300 N
A bowling ball is harder to get moving and harder to stop than a hollow rubber ball of the same size. What law explains this?
first law of motion
second law of motion
third law of motion
Which of the following statement shows WORK?
Force must be applied and an object must not move through a distance
For must not be applied and an object must move through a distance
Force must not be applied and an object must not move through a distance
Force must be applied and an object must move through a distance
An astronaut weighs 400 N on earth. The gravity of the moon is 1/6 of the earth’s gravity. Acceleration due to gravity on earth is 9.8 ᵐ/ˢ² . What is the astronaut's mass on earth?
40.82 kg
43.40 kg
44.09 kg
47.82 kg
A force of 1500 N is applied during the drive off from a sprint start. The centre of mass moves a distance 0.4 m. What work is done?
1200 J
1500 J
1350 J
600 J
Energy is the capacity to do work. There are different forms of energy. What is the example of Potential Energy?
Holding a weight above the head
Speed of sprint runner
Stretching spring weights
Holding a weight below the head
Power is defined as...
the capacity to do work
the location of the point of application to displace in space
no energy change then total mechanical energy remains constant
the rate at which work is being done
The kid at the top of the roller coaster car pictured here has
100% Potential Energy
0% Kinetic Energy
75% Potential Energy
25% Kinetic Energy
50% Potential Energy
50% Kinetic Energy
0% Potential Energy
100% Kinetic Energy
Which requires more POWER – a person WALKING up stairs OR a person RUNNING up stairs?
walking
running
they require equal power output
no power is required at all
At the lowest point of the roller coaster
At halfway down the track
At the top of the roller coaster
C
D
E
Where is kinetic energy at its maximum?
a
b
c
d
what is defined as the product of the magnitudes of displacement and the
component of the force parallel to the displacement ?
work
energy
momentum
power
According to Newton's 2nd Law of Motion, force equals mass times ?
inertia
speed
acceleration
weight
When a water rocket pushes water out of the nozzle and the rocket is able to travel across the field - What # of Newton's Law is this?
1
2
3
if a boy pushes a wall with a force of 10N towards east then the force exerted by the wall on the boy is .......
10N towards EAST
10N towards WEST
20N towards east
10N towards NORTH
The greater the mass of an object, the harder it
is to move when it is at rest, or difficult to stop when in motion. It is the Newton’s ____ law of motion.
1st Law of Motion
2nd Law of Motion
3rd Law of Motion
All of these are correct.
The statement "for every action, there is an equal but opposite reaction" is a statement of ____.
the law of conservation of momentum
Newton's second law
Newton's first law
Newton's third law
5. When you ride your bike around a corner at 10 m/s, you are accelerating.
True
False
A 3,000-N force gives an object an acceleration of 15 m/s2 . The mass of the object is ____.
45,000 kg
1,500 kg
200 kg
15 kg
How much power is generated by Ashley (50 kg) running up a 6 m flight of stairs in 5 seconds?
60 W
62 W
600 W
1500 W
Explain the concept of frequency in relation to soundwaves.
The color of the sound
The temperature of the sound
The number of cycles of a wave that occur in a second
The size of the sound
Which of the following is the bending of a wave, as it changes its speed moving from one medium to another.
Reflection
Diffraction
Refraction
Frequency
When a wave bends or spreads past a barrier or opening, this is referred to as
Reflection
Refraction
Radiation
Diffraction
Which type of interaction is this?
reflection
refraction
diffraction
interference
Which type of interaction is this?
reflection
refraction
diffraction
interference
