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WorksheetsUnit 3 Energy Test Review
Total questions: 44
Worksheet time: 41mins
Potential Energy that depends on height is called
kinetic
gravitational potential energy
elastic potential energy
mechanical energy
The total potential and kinetic energy of the PARTICLES of an object is the object's
nuclear energy
electromagnetic energy
thermal energy
mechanical energy
Which of these is a good conductor, material that allows heat to flow easily?
wood
metal
paper
air
A measure of the average kinetic energy of the individual particles in an object is called
thermal energy
conduction
convection
temperature
Suppose four science books were on different shelves. Which one would have the greatest potential energy?
The book at 2 m high.
The book at 3 m high.
The book at 4 m high.
The book at 5 m high.
Which of the following is not a major way that heat can be transferred?
radiation
insulation
conduction
convection
Heat Transfer Occurs
In many directions
both from warm objects to colder ones and from cold objects to warmer ones
only from warm objects to colder ones
only from colder objects to warm ones.
If you were cooking and accidentally touched the hot stove, which type of heat transfer does that represent
radiation
insulation
conduction
convection
How does thermal energy transfer when you add ice cubes to lemonade?
from the ice to the lemonade
from the lemonade to the ice.
It would transfer equally between the two substances.
It depends on how much ice is added.
Energy that is emitted or reflected from objects in the form of waves that can travel through space...
electromagnetic energy
electrical energy
chemical potential energy
kinetic energy
Energy in motion:
nuclear energy
potential energy
kinetic energy
radiant energy
A scientific law stating that energy cannot be created or destroyed.
The Law of Potential Energy
The Law of Kinetic Energy
The Law of Conservation of Energy
Which letter shows the potential energy stored at its maximum point?
Y
W
X
Z
When you rub your hands together on a cold day, you use friction to convert
electrical energy into electromagnetic energy
thermal energy into nuclear energy
kinetic energy into thermal energy
nuclear energy into electrical energy
When water boils in a pan on a hot burner, heat gets to the water mainly by
radiation of heat through the pan.
conduction of heat through the pan.
absorption of heat from the air in the room.
reflection of heat from the burner.
What is the process by which heat energy gets to Earth from the Sun?
Convection
Radiation
Reflection
Conduction
In thermal energy transfer, thermal energy always flows from the object with _______________ to the object with _______________.
higher thermal energy to lower thermal energy
lower thermal energy to higher thermal energy
lower temperature to higher temperature
cold to heat
Which point on the pendulum's swing represents the maximum kinetic energy?
A
B
C
A & C
What would 54N be an example of?
work
power
distance
force
What is an example of a force?
Energy
Power
Pressure
Weight
A 900 kg car is moving at a speed of 30 m/s. How much kinetic energy does it have?
0 J
405,000 J
355,000 J
264,600 J
How much gravitational potential energy does a 100kg (220lb.) skydiver have if they jump from 4000 meters?
3,920,000 J
294 J
180,000 J
1,225 J
A 6kg cat misjudges a jump and falls 5 meters. How much gravitational potential energy does the cat have? (The cat is fine by the way.)
294 J
180,000 J
1,225 J
3,920,000 J
What is the kinetic energy of a 1,600 kg Mustang traveling at 15 m/s (33mph)
180,000 J
294 J
1225 J
3,920,000 J
The sum of the kinetic and potential energy in a system is known as the system's _____________________ energy.
mechanical
chemical
thermal
combined
At which point in the picture must the cart have the most MECHANICAL energy?
Point 1
Point 2
Point 3
They would all be the same
Convection is the
primary way energy travels through space in the form of rays
Convection is the transfer of energy by direct contact and occurs primarily between solids
Convection is the
primary way heat travels through appliances
Convection is the
transfer of energy by the movement of heated particles & occurs primarily in liquids and gasses
How is heat transferred within the water when boiling a kettle on the stove?
The transfer of energy by MOVEMENT of heated particles through liquids of gases is called
The transfer of energy that occurs when you force and object to move:
newton
power
work
radiation
A material that resists/limits the flow of heat is a(n)
conductor
insulator
metal
radiator
what 2 factors does kinetic energy depend on?
- Mass of the object (m)
- Speed the object is moving (v)
- Mass of the object (m)
- Weight of the object (W)
- Speed of the object (v)
- Weight of the object (W)
- Weight (W)
- velocity (V->)
As the time required to do work increases, the amount of power developed:
Stays the same
Decreases
Increases
Becomes zero
What type of energy transformation would occur when a piece of wood is burnt?
Electrical energy is released as radiant energy
Mechanical energy is stored as chemical energy
Stored chemical energy is released as thermal energy
No transformation occurs
All of the following are examples of chemical potential energy except:
Stored energy in food
Energy plants get from photosynthesis
Energy stored in a battery
Energy from an electrical outlet
The specific heat(c) of copper is 389 J/kg *C. What is the temperature change(∆t) when 9000 Joules of heat(Q) is added to 2 kg of copper?
13.9 °C
14.2 °C
11.57 °C
20.0 kg of water. specific heat of water is 4.184 J/kg°C. temperature changes from 20.0° C to 25.0° C, what was the change in thermal energy (Q)?
418 Joules
209 J
83 J
4.18 J
If you do 40 joules of work lifting a 10N box, how high is the shelf you moved it to.
400m
40m
50m
4m
