PHYSICAL SCIENCE REVISION QUESTIONS. SAMPLE EXAM
REVISION PRACTICE QUESTIONS WITH CORRECT
ANSWERS (2024 UPDATE)
energy - ANSWER- is the ability to cause change
Law of Conservation of Energy - ANSWER- states that energy cannot be created or destroyed.
Chemical Potential Energy - ANSWER- energy stored in chemical bonds
Kinetic Energy - ANSWER- is the energy a moving object has because of its motion
Elastic Potential Energy - ANSWER- is energy stored by something that can stretch or
compress, such as a rubber band or spring
Gravitational Potential Energy - ANSWER- energy stored by objects due to their position
above Earth's surface
What occurs when energy is transferred from one object to another? - ANSWER- change
What can you tell me about energy transformation occurs as an object falls? - ANSWER- as an
object falls it gains kinetic energy increases and the gravitational potential energy decreases
What happens when a car engine what are the energy transformations that occur? - ANSWER-
Starts as chemical potential energy, then the spark of fire come and it becomes thermal energy, and
finally mechanical energy/
SI unit of energy - ANSWER- Joule
, Mechanical Energy - ANSWER- is the total amount of potential and kinetic energy in a system
that can be expressed by this equation.
What two factors determine how much gravitational potential energy an object has?
Select one:
a. shape and speed of the object
b. shape of the object and its position relative to the ground
c. weight and speed of the object
d. weight of the object and height above the ground - ANSWER- d. weight of the object and
height above the ground
The gravitational potential energy of an object changes when which of the following changes?
Select one:
a. the object's length
b. the object's mass
c. the object's speed
d. the object's temperature - ANSWER- b. the object's mass
The kinetic energy of an object changes when which of the following changes?
Select one:
a.the object's speed
REVISION PRACTICE QUESTIONS WITH CORRECT
ANSWERS (2024 UPDATE)
energy - ANSWER- is the ability to cause change
Law of Conservation of Energy - ANSWER- states that energy cannot be created or destroyed.
Chemical Potential Energy - ANSWER- energy stored in chemical bonds
Kinetic Energy - ANSWER- is the energy a moving object has because of its motion
Elastic Potential Energy - ANSWER- is energy stored by something that can stretch or
compress, such as a rubber band or spring
Gravitational Potential Energy - ANSWER- energy stored by objects due to their position
above Earth's surface
What occurs when energy is transferred from one object to another? - ANSWER- change
What can you tell me about energy transformation occurs as an object falls? - ANSWER- as an
object falls it gains kinetic energy increases and the gravitational potential energy decreases
What happens when a car engine what are the energy transformations that occur? - ANSWER-
Starts as chemical potential energy, then the spark of fire come and it becomes thermal energy, and
finally mechanical energy/
SI unit of energy - ANSWER- Joule
, Mechanical Energy - ANSWER- is the total amount of potential and kinetic energy in a system
that can be expressed by this equation.
What two factors determine how much gravitational potential energy an object has?
Select one:
a. shape and speed of the object
b. shape of the object and its position relative to the ground
c. weight and speed of the object
d. weight of the object and height above the ground - ANSWER- d. weight of the object and
height above the ground
The gravitational potential energy of an object changes when which of the following changes?
Select one:
a. the object's length
b. the object's mass
c. the object's speed
d. the object's temperature - ANSWER- b. the object's mass
The kinetic energy of an object changes when which of the following changes?
Select one:
a.the object's speed
