WorksheetsEnergy Unit - Essentials (Exam Review)
Total questions: 65
Worksheet time: 5hrs 31mins
Kai, Samuel, and William are having a science debate! They want to know: What exactly is thermal energy?
The sum of kinetic and potential energy of the particles in an object.
The measure of the average kinetic energy of particles in an object.
The energy stored in chemical bonds.
The energy due to an object's position.
Priya and Aiden are having a snowball fight! If they each make bigger and bigger snowballs, how does the thermal energy of each snowball change as its mass increases?
Thermal energy decreases as mass increases.
Thermal energy remains constant as mass increases.
Thermal energy increases as mass increases.
Thermal energy is not affected by mass.
Lily and James are having a debate in science class. Lily says temperature measures the total energy of an object, while James thinks it’s something else. What does temperature actually measure?
The total energy of an object.
The average kinetic energy of particles in an object.
The potential energy of particles in an object.
The chemical energy in an object.
Luna and Aiden are watching particles under a microscope. As they turn up the heat, what do you think happens to the particles?
The particles move slower.
The particles stop moving.
The particles move faster.
The particles remain at the same speed.
Evelyn and Michael are having a hot chocolate party! Evelyn's mug is steaming hot, while Michael's is a bit chilly. In which direction will the thermal energy flow between their mugs?
From lower temperature objects to higher temperature objects
From higher temperature objects to lower temperature objects
In a circular motion
It does not flow
Aria and Benjamin are having a heated debate! Aria says heat is just energy stored in an object, while Benjamin insists it's something else. Who is right? What is the definition of heat in the context of thermal energy?
The storage of energy in an object
The transfer of energy from one object to another
The creation of energy within an object
The destruction of energy in an object
Emma and Nora are having a science quiz! They want to know: In what unit is heat measured?
Watts
Newtons
Joules
Volts
Olivia and Ethan are outside on a chilly day. Olivia says, "I feel so cold!" What does it really mean when you feel cold?
You are feeling the presence of cold.
You are feeling the absence of heat.
You are feeling the presence of heat.
You are feeling the absence of cold.
Maya and Elijah are conducting a science experiment. When heat flows into their object, what do you think happens?
The change in heat is negative.
The change in heat is zero.
The change in heat is positive.
The change in heat is neutral.
Olivia and Samuel are having a hot chocolate contest! If Samuel's mug loses heat to the chilly air, what happens to the change in heat for his mug?
The change in heat is positive.
The change in heat is negative.
The change in heat is zero.
The change in heat is neutral.
Arjun, Maya, and Sophia are having a science debate! They want to know: which type of material is the best conductor of heat?
Solids
Liquids
Gases
Plasma
Ethan and Avery are curious about how heat moves around them. In which states of matter does convection primarily occur?
Solids and gases
Liquids and gases
Solids and liquids
Plasma and solids
During science class, Luna and Michael are watching how soup heats up on the stove. What role do currents play in the process of convection that they observe?
They move heat from cooler to warmer parts of the substance.
They move heat from warmer to cooler parts of the substance.
They prevent the movement of heat.
They have no effect on heat transfer.
What is the process of energy transfer through electromagnetic waves called?
Conduction
Convection
Radiation
Reflection
In which medium does radiation occur the fastest?
Solids
Liquids
Gases
Plasma
What can happen to radiation when it encounters a surface?
It can only be absorbed
It can only be reflected
It can be absorbed or reflected
It can be neither absorbed nor reflected
Which of the following is true about radiation?
It cannot travel through space
It only occurs between molecules
It can travel through space and between molecules
It requires a medium to travel
What are conductors?
Materials that allow heat to flow easily
Materials that do not allow heat to flow easily
Materials that absorb light
Materials that reflect sound
Which of the following is an example of an insulator?
Metal
Skin
Air
Copper
What is the main characteristic of insulators?
They allow heat to flow easily
They do not allow heat to flow easily
They conduct electricity
They are magnetic
What is specific heat?
The amount of heat needed to raise the temperature of 1 kg of a material by 1 °C or K.
The amount of heat needed to melt 1 kg of a material.
The amount of heat needed to freeze 1 kg of a material.
The amount of heat needed to vaporize 1 kg of a material.
Which formula represents the relationship between heat, mass, specific heat, and temperature change?
Q = mcΔT
Q = m + c + ΔT
Q = m/cΔT
Q = mc/ΔT
Hannah is helping Emma and Grace with their science homework. In the formula Q = mcΔT, what does 'Q' represent?
Mass
Specific heat
Change in thermal energy (or heat)
Change in temperature
In the formula Q = mcΔT, what is the unit of 'c' (specific heat)?
J
kg
J/kg °C
°C
What is the definition of work in physics?
The transfer of energy that occurs when a force makes an object move.
The energy stored in an object due to its position.
The rate at which work is done.
The force applied to an object without causing movement.
Which of the following is a condition for work to be done?
The object must remain stationary.
The force must be applied perpendicular to the direction of movement.
The object must move.
The force must be applied without any movement.
If a force of 90 N is applied to move an object 35 m, how much work is done?
3,150 J
3,050 J
3,250 J
3,100 J
What is the force required to move a 75 kg refrigerator 35 m if the work done is 3,150 J?
90 N
85 N
95 N
100 N
What is the work done if a force of 50 N moves an object 10 m?
500 J
400 J
600 J
450 J
What happens to the work done if both force and distance are doubled?
It is quadrupled
It is doubled
It remains the same
It is halved
What is the formula for power?
P = W + t
P = W - t
P = W * t
P = W/t
In the formula P = W/t, what does 'W' represent?
Weight
Work
Width
Watt
What is the unit of time in the formula P = W/t?
Minutes
Hours
Seconds
Days
What unit is used to measure power in this example?
Watts
Joules
Seconds
Newtons
________________ is done whenever a force moves an object a distance.
Load
Friction
Force
Work
It took 500 Newtons of force to push a car four meters. How much work was done?
2000 J
125 J
0.008 J
500 J
In the formula, what does P represent?
power
work
time
watt
What is the ability to cause change known as?
Force
Energy
Power
Momentum
In what unit is energy measured?
Newton
Watt
Joule
Pascal
Image of a roller coaster loop illustrating kinetic and potential energy.
The roller coaster has maximum kinetic energy at the top of the loop.
The roller coaster has maximum potential energy at the top of the loop.
The roller coaster has maximum kinetic energy at the bottom of the loop.
The roller coaster has maximum potential energy at the bottom of the loop.
What is the formula for Kinetic Energy?
KE = mv
KE = 1/2 mv2
KE = m^2v
KE = 2mv
In the formula for Kinetic Energy, what does 'm' represent?
Mass
Momentum
Meter
Mole
In the formula for Kinetic Energy, what does 'v' represent?
Volume
Velocity
Voltage
Viscosity
What is the unit of measurement for mass in the Kinetic Energy formula?
grams (g)
pounds (lb)
kilograms (kg)
ounces (oz)
What is the unit of measurement for velocity in the Kinetic Energy formula?
meters per second (m/s)
kilometers per hour (km/h)
miles per hour (mph)
feet per second (ft/s)
What is the formula for calculating kinetic energy?
KE = mv
KE = ½ mv²
KE = m²v
KE = 2mv
A jogger with a mass of 60 kg is moving at a speed of 3.0 m/s. What is the jogger’s kinetic energy?
180 J
270 J
360 J
450 J
A baseball with a mass of 0.15 kg is moving at a speed of 40 m/s. What is the baseball’s kinetic energy?
120 J
150 J
100 J
130 J
If a stone has 390 J of energy and is moving with a speed of 12 m/s, what is the mass of the stone?
5.42 kg
4.50 kg
6.00 kg
5.00 kg
What is potential energy?
Energy in motion
Stored energy
Energy from the sun
Energy from food
Which of the following is a type of potential energy?
Kinetic energy
Thermal energy
Elastic potential energy
Nuclear energy
Which type of potential energy is associated with height?
Chemical potential energy
Elastic potential energy
Gravitational potential energy
Thermal energy
What is elastic potential energy?
Energy stored in objects being compressed or stretched
Energy released during chemical reactions
Energy due to an object's motion
Energy from the sun
Which of the following is an example of elastic potential energy?
A running car
A bow and arrow
A burning candle
A flowing river
What is chemical potential energy?
Energy stored in chemical bonds of compounds
Energy from the sun
Energy from moving objects
Energy from sound waves
Which of the following is an example of chemical potential energy?
Wind
Firewood
Light
Sound
What does GPE stand for in the context of potential energy?
Gravitational Potential Energy
General Potential Energy
Ground Potential Energy
Global Potential Energy
In the formula for Gravitational Potential Energy, what does 'h' represent?
Height
Heat
Horizon
Hertz
How much gravitational potential energy does a 5 kg rock have if it is sitting on the edge of a cliff that is 10 m high?
490 J
980 J
245 J
100 J
A Viking ship roller coaster at the fair has a mass of 36,000 kg. If at its peak it reaches a height of 20 m off the ground, how much gravitational potential energy does it have?
7,056,000 J
5,000,000 J
10,000,000 J
3,000,000 J
A 1.5 kg apple pie is sitting on the kitchen counter. If it has 13.44 J of gravitational potential energy, how tall is the counter it sits on?
0.914 m
1.5 m
0.5 m
1.2 m
A suitcase with a mass of 12.2 kg sits on a counter 1.8 m high in the airport. How much potential energy does it have?
216 J
150 J
300 J
180 J
