Podcast
Questions and Answers
Which of the following activities does NOT directly involve the use of energy?
Which of the following activities does NOT directly involve the use of energy?
- Reading a book (correct)
- Hearing music
- Seeing a light
- Feeling the wind
Living organisms do not require energy for survival.
Living organisms do not require energy for survival.
False (B)
Give three examples of forms of energy.
Give three examples of forms of energy.
Heat, Light, Chemical
The internal motion of atoms is called ______ energy.
The internal motion of atoms is called ______ energy.
Match the energy type with its description:
Match the energy type with its description:
Which form of energy is stored in fuels and food?
Which form of energy is stored in fuels and food?
Electrical energy involves the flow of neutrons along a wire.
Electrical energy involves the flow of neutrons along a wire.
Where does nuclear energy originate within an atom?
Where does nuclear energy originate within an atom?
When the nucleus of an atom splits in a process called ______, nuclear energy is released.
When the nucleus of an atom splits in a process called ______, nuclear energy is released.
Match the scenarios with the type of energy involved:
Match the scenarios with the type of energy involved:
In the context of energy transfer, what primarily occurs when a bowling ball hits the pins?
In the context of energy transfer, what primarily occurs when a bowling ball hits the pins?
Gravitational potential energy depends only on the mass of an object.
Gravitational potential energy depends only on the mass of an object.
Explain the relationship between height and gravitational potential energy.
Explain the relationship between height and gravitational potential energy.
Energy stored in a stretched rubber band is an example of ______ potential energy.
Energy stored in a stretched rubber band is an example of ______ potential energy.
Match the following items with their correct energy form
Match the following items with their correct energy form
Which activity primarily uses chemical energy?
Which activity primarily uses chemical energy?
All forms of energy can be directly seen.
All forms of energy can be directly seen.
How does friction contribute to heat energy?
How does friction contribute to heat energy?
The energy from the sun is generally referred to as ______ energy.
The energy from the sun is generally referred to as ______ energy.
Match the following energy type with its primary use
Match the following energy type with its primary use
Which of the following best describes thermal energy?
Which of the following best describes thermal energy?
Mechanical energy only refers to the energy of motion.
Mechanical energy only refers to the energy of motion.
What type of energy transformation occurs when sunlight is used by a plant to grow?
What type of energy transformation occurs when sunlight is used by a plant to grow?
Energy that is carried by an electrical current is known as ______ energy.
Energy that is carried by an electrical current is known as ______ energy.
Which of the following is an example of light (radiant) energy being absorbed?
Which of the following is an example of light (radiant) energy being absorbed?
According to the law of conservation of energy, energy can be created but not destroyed.
According to the law of conservation of energy, energy can be created but not destroyed.
Give an example of a device that transforms electrical energy into mechanical energy.
Give an example of a device that transforms electrical energy into mechanical energy.
The total mechanical energy of an object is the sum of its kinetic energy and its ______ energy.
The total mechanical energy of an object is the sum of its kinetic energy and its ______ energy.
Match the car component with its primary energy transformation.
Match the car component with its primary energy transformation.
In the illustration that I gave you, the alarm clock demonstrates which energy transformation?
In the illustration that I gave you, the alarm clock demonstrates which energy transformation?
A cooler object's molecules will have less movement than a hotter object's molecules.
A cooler object's molecules will have less movement than a hotter object's molecules.
What type of energy is stored in food?
What type of energy is stored in food?
A vibrating object transmits energy through the air in the form of ______ waves.
A vibrating object transmits energy through the air in the form of ______ waves.
Match the example with the type of energy present.
Match the example with the type of energy present.
Which type of energy primarily cooks food in a microwave oven?
Which type of energy primarily cooks food in a microwave oven?
When a pin is juggled, its kinetic energy increases until it reaches its highest point.
When a pin is juggled, its kinetic energy increases until it reaches its highest point.
Give an example of a scenario where mechanical energy is transformed into thermal energy.
Give an example of a scenario where mechanical energy is transformed into thermal energy.
During photosynthesis, plants convert light energy into ______ energy.
During photosynthesis, plants convert light energy into ______ energy.
Match the following energy transformation with the device or process.
Match the following energy transformation with the device or process.
In the illustration that I gave you, what is the initial source of energy for the cat’s movement?
In the illustration that I gave you, what is the initial source of energy for the cat’s movement?
Energy transformation always results in 100% conversion to the desired form with no other forms of energy produced.
Energy transformation always results in 100% conversion to the desired form with no other forms of energy produced.
What type of energy powers a remote control?
What type of energy powers a remote control?
The spinning of the plate inside a microwave oven is an example of ______ energy.
The spinning of the plate inside a microwave oven is an example of ______ energy.
Match the scenario with the energy transformation.
Match the scenario with the energy transformation.
Which form of energy is associated with the sun?
Which form of energy is associated with the sun?
Electrical energy used in your home can be thought of as potential energy.
Electrical energy used in your home can be thought of as potential energy.
Give an example of where energy is converted into thermal energy, when riding a bike.
Give an example of where energy is converted into thermal energy, when riding a bike.
An object has the potential to do work because of its ______.
An object has the potential to do work because of its ______.
Match the following devices with their energy transformation:
Match the following devices with their energy transformation:
Which of the following best describes the use of radiant energy by humans?
Which of the following best describes the use of radiant energy by humans?
Radiant energy cannot be reflected.
Radiant energy cannot be reflected.
What is the original source of energy for the chemical bonds found in wood?
What is the original source of energy for the chemical bonds found in wood?
When using an electric hair dryer, you are using electrical energy to produce mechanical, ______, and sound energy.
When using an electric hair dryer, you are using electrical energy to produce mechanical, ______, and sound energy.
Match the following word to its related definition:
Match the following word to its related definition:
What are gamma rays, x-rays and ultraviolet rays examples of?
What are gamma rays, x-rays and ultraviolet rays examples of?
As a car drives, the engine decreases thermal energy, because it is being converted to mechanical energy.
As a car drives, the engine decreases thermal energy, because it is being converted to mechanical energy.
What form of energy does the spinning plate inside of the microwave create?
What form of energy does the spinning plate inside of the microwave create?
The total amount of energy does not ______, but is instead changed from one form to another.
The total amount of energy does not ______, but is instead changed from one form to another.
Match the tree in the picture and tomato in the picture to what type of energy is shown below:
Match the tree in the picture and tomato in the picture to what type of energy is shown below:
The alarm clock in the image converts electrical energy into which other forms of energy?
The alarm clock in the image converts electrical energy into which other forms of energy?
The cat jumping in the image primarily demonstrates which type of energy?
The cat jumping in the image primarily demonstrates which type of energy?
The sunlight entering the room is an example of chemical energy.
The sunlight entering the room is an example of chemical energy.
If the person in the bed consumes an energy drink depicted in the image, what type of energy transformation will occur within their body?
If the person in the bed consumes an energy drink depicted in the image, what type of energy transformation will occur within their body?
Identify two forms of energy transformation that occur when the window is open and sunlight enters the bedroom.
Identify two forms of energy transformation that occur when the window is open and sunlight enters the bedroom.
Flashcards
What is energy?
What is energy?
Energy is all around us, manifesting as sound, light and wind.
What is heat energy?
What is heat energy?
Internal motion of atoms producing heat; produced by friction; causing temperature changes.
What is chemical energy?
What is chemical energy?
Fuel and food store energy in chemical bonds; breaking bonds releases energy.
What is electrical energy?
What is electrical energy?
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What is nuclear energy?
What is nuclear energy?
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What is mechanical energy?
What is mechanical energy?
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What is gravitational potential energy?
What is gravitational potential energy?
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What is elastic potential energy?
What is elastic potential energy?
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What is Sound Energy?
What is Sound Energy?
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What is Light (Radiant) Energy?
What is Light (Radiant) Energy?
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What is Thermal Energy?
What is Thermal Energy?
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How do Potential & Kinetic Energy relate?
How do Potential & Kinetic Energy relate?
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Example of an energy transformation?
Example of an energy transformation?
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How does an engine relate to energy transformations?
How does an engine relate to energy transformations?
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How does an Alarm Clock transform energy?
How does an Alarm Clock transform energy?
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Light energy to chemical energy
Light energy to chemical energy
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Mechanical and Thermal Energy
Mechanical and Thermal Energy
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Energy via a power outlet
Energy via a power outlet
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Chemical to light/heat
Chemical to light/heat
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Radiant cooking
Radiant cooking
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Study Notes
- Energy is all around
- Energy can be heard as sound, seen as light, and felt as wind
- Energy is used to hit a softball, lift a book bag and compress a spring
- Living organisms require energy
When Energy is Involved
- When a bird flies
- When a bomb explodes
- When rain falls from the sky
- Electricity flowing in a wire
Forms of Energy
- Heat
- Light
- Chemical
- Sound
- Nuclear
- Electrical
- Solar
- Mechanical
Heat Energy
- The internal motion of atoms
- Moving particles produce heat
- Heat can be produced by friction
- It causes change in temperature
- Hot objects involves atoms and molecules being excited and showing rapid movement
- Cooler objects feature molecules and atoms with less movement
Chemical Energy
- Fuel and food are stored
- It is required to bond atoms together in compounds
- Energy is released when bonds are broken
Electrical Energy
- The flow of electrons in a wire
- Moving electrons generate electricity
- Electrical energy used in homes can be potential energy
Nuclear Energy
- The nucleus of an atom is the source
- Energy makes up a stable atom
Nuclear Fission
- When the nucleus splits, nuclear energy is released in the form of heat and light energy
- It's released when nuclei collide at high speeds and fuse
- Nuclear energy is the most concentrated form
Mechanical Energy
- Energy of motion
- The total energy of motion and position of an object including potential energy and kinetic energy
- The mechanical energy of an object stays the same
- Potential and kinetic energy of an object can increase or decrease
- Kinetic energy decreases until all kinetic energy turns into potential energy, and it stops moving upward
- As the pin falls back down, its potential energy starts changing
Mechanical Energy example
- When throwing a bowling ball, energy is given
- When the ball hits the pins, energy is transferred to the pins which gives them momentum
Forms of Energy
- One must provide examples of the following: light, sound, electrical, solar, mechanical, and gravitational
Gravitational Potential Energy (GPE)
- Type of potential energy generated based on the height of an object by the force of gravity
- GPE depends on the height and mass of an object
- When something is high above the ground, GPE is high
Elastic Potential Energy
- Potential energy stored as a result of the deformation of an elastic object, such as a rubber band
Elastic Potential Energy Examples
- Coil spring of a wind-up clock
- Archer's stretched bow
- Bent diving board before a diver jumps
- Twisted rubber band that powers a toy airplane
- Bouncy ball compressed against a brick wall
Light (Radiant) Energy
- Created by vibrating particles that create waves that travel through space and time
- These waves are called electromagnetic waves
- It can be absorbed, transmitted, or reflected
- Includes energy from gamma rays, x-rays, and ultraviolet rays
Transformations of Energy
- Energy transforms continually between one form and another
- One form of energy changes into more than one form.
- Energy is never created or destroyed, it just changes its form
Mechanical Energy Examples
- Electrical energy is transformed into mechanical and sound energy in a blender
- Electrical energy is transformed into mechanical, thermal, and sound energy in a hairdryer
- Electrical energy is transformed into light and sound energy in an alarm clock
- Chemical energy transforms into mechanical energy when a car engine transforms chemical energy in gasoline
- Some chemical energy is converted into thermal energy causing heat
- Electrical energy is transformed into radiant energy in a microwave
Chemical Energy Examples
- Food (apple) and Gasoline
Radiant Energy Examples
- Microwaves that cooks food in a microwave
Transformation of Energy in Riding a Bike
- As a rider pedals, leg muscles transform chemical energy (potential energy from food) into mechanical (kinetic) energy
- Mechanical (kinetic) energy of the leg muscles transforms into mechanical (kinetic) energy of the bicycle
- Some of the mechanical energy transforms into potential energy as moving up the hill
- Some energy transforms into thermal energy, making the body warmer due to friction
Identify Transformations of Energy
- Light transforming to chemical in plants
- Chemical into mechanical, such as in an apple to a bike
- Electrical to heat, such as through an oven
- Chemical transforming to mechanical, for example fueling a car
- Electrical transforming to mechanical and heat such as a fridge
- Mechanical Energy to heat, such as in friction
- Electrical energy transforming to light and heat, such as a lamp
- Chemical energy transforming to light and heat, such as a flashlight
- Light transforming into electrical and heat such a Solar Panel
- Sound transforming to electrical, and then to Sound, as in a telephone
- Chemical, Mechanical, and Radiant shown through a TV and Remote control.
Law of Conservation of Energy
- Energy is never created or destroyed, it just changes its form
- In a burning match, chemical energy becomes thermal energy and radiant energy.
- The match burns, the chemical energy decreases while the thermal and radiant energy increase.
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