WorksheetsScience 8 MidSem Review
Total questions: 35
Worksheet time: 17mins
The resistance of an object to a change in its state of rest or uniform motion.
Acceleration
Energy
Inertia
Force
Which of the following is NOT true about the second law of motion, law of acceleration?
The net force acting on an object is a product of its mass and acceleration.
With the mass held constant, greater force results to greater acceleration.
With the force held constant, greater mass results to lesser acceleration.
With the acceleration held constant, greater force results to greater mass.
The third law of motion, law of interaction, states that:
For every action, there is an equal reaction.
For every action, there is an opposite reaction.
For every action, there is an equal and opposite reaction.
For every action, there is a greater reaction in the same direction.
This law states that: An object at rest will stay at rest, and an object in motion will stay in motion at constant velocity, unless acted upon by an unbalanced force.
Law of Acceleration
Law of Force
Law of Inertia
Law of Interaction
This law describes the relationship between voltage (V), current (I), and resistance (R).
Joule's Law
Newton's Law
Ohm's Law
Volts' Law
The greater the mass of an object, the greater is its inertia.
TRUE
FALSE
The greater the force, the greater the acceleration of a body with the same mass.
TRUE
FALSE
The lesser the mass, the greater is the acceleration of a body acted upon by the same net force.
TRUE
FALSE
Heat flows from a body of lower temperature to a body of higher temperature.
TRUE
FALSE
Heat transfer requires temperature difference between two bodies.
TRUE
FALSE
As the current (I) increases, the voltage (V) also increases.
TRUE
FALSE
Which of the following quantities can be described with the unit of Joules (J)?
Select all that applies.
Force
Kinetic Energy
Potential Energy
Power
Which of the following is a unit of force?
kg
m/s^2
N
W
Which of the following is a unit of mass?
kg
m/s^2
N
W
Which of the following is a unit of acceleraction?
kg
m/s^2
N
W
What is the value of the acceleration due to gravity?
1.0 m/s^2
9.8m/s^2
340m/s^2
300,000,000 m/s^2
The second law of motion can be written in mathematical equation as __________:
F = ma
F(1) = - F(2)
F = v(2) - v(1) / t
F(net) = F(1) + F(2)
Review of formula: KE = __________
KE = ma
KE = mgh
KE = 1/2 mv^2
KE = F(net)d
Review of formula: PE = __________
PE = ma
PE = mgh
PE = 1/2 mv^2
PE = F(net)d
Review of formula: P = __________ (select all possible answer/s)
P = ma
P = F(net)d
P = E / t
P = W / t
In the word problem:
How much net force is needed for a 60kg object to accelerate at a rate of 10m/s^2?
What is the value of the given mass? (Write the numerical answer only)
(a)
In the word problem:
How much net force is needed for 60kg object to accelerate at a rate of 10m/s^2?
What is the value of the given acceleration? (Write the numerical answer only)
(a)
In the word problem:
How much work is done by a shopper in pushing her grocery cart by a force of 32N to a distance of 4.5m?
Which of the following is NOT part of the solution?
force of 32N
distance of 4.5m
W = F(net)d
F(net) = F(1) + F(2)
In the word problem:
A 75.0 kg man climbs a 6.00m ladder. What is the potential energy of the man relative to the ground?
What are the given values? Select all that applies.
m = 75.0 kg
d = 6.00m
g = 9.8m/s^2
PE = mgh
In the word problem:
When running at their top speed, an animal with an average mass of 72kg has a top speed of 31.4m/s. What is its kinetic energy?
What are the given values? Select all that applies.
m = 72kg
v = 31.4m/s
g = 9.8m/s^2
KE = 1/2 mv^2
In the word problem:
You are given with a motor with an average net force of 890N, covering a distance covered of 12m, within a time interval of 22s. Determine its power output.
What equation/s would you use? Select all that applies.
P = W/t
P = E/t
W = F(net)d
PE = mgh
It is described as the energy of a moving object or the energy of motion.
Kinetic Energy
Light Energy
Potential Energy
Sound Energy
It is a device that is used to interrupt the flow of current when a fault is detected, designed as a switch to open or close an electric circuit to protect the system from damage.
circuit breaker
double insultation system
fuse
grounding system
It is described as the energy gained or lost by an object.
Electrical Energy
Kinetic Energy
Light Energy
Potential Energy
Which of the following is NOT true about a series circuit?
It is a complete path for an electric current.
It only has one path.
When one of the appliances connected in series is damaged, the rest of the appliances will cease to function as well.
It may have alternative paths for current to flow.
It is described as the energy produced from the movement of charged particles.
Electrical Energy
Kinetic Energy
Light Energy
Potential Energy
It is described as the energy transmitted through a medium by the vibration of an object, consisting of waves or air particles.
Electrical Energy
Light Energy
Sound Energy
Thermal Energy
It is described as the energy that travels in the form of both a particle and a wave, which stimulate the sense of sight.
Electrical Energy
Kinetic Energy
Light Energy
Potential Energy
Which of the following is NOT a charging process?
by conduction
by convection
by friction
by induction
Which of the following is NOT a mode of heat transfer?
conduction
convection
induction
radiation
