Energy
What is the ability to do work or cause change?
Energy
What type of energy is associated with the motion of an object?
Kinetic Energy
What type of energy is stored in an object due to its position?
Potential Energy
Name one type of renewable energy source.
Solar energy, wind energy, or hydroelectric energy.
Give an example of energy transformation in a light bulb.
Electrical energy is converted into light and thermal energy.
Name one form of energy that can be converted into other forms.
Examples include mechanical energy, thermal energy, chemical energy...
Give an example of an object that has kinetic energy.
A moving car or a rolling ball etc.
What is an example of potential energy?
A child at the top of a slide: before they begin to slide.
A stretched rubber band: waiting to be released.
Food we eat, which contains stored energy that our bodies convert. Etc.
What is the main advantage of using renewable energy?
It is sustainable and has a lower environmental impact.
What transformation occurs when you rub your hands together?
Mechanical energy is converted into thermal energy (heat).
What is the law that states energy cannot be created or destroyed?
Law of Conservation of Energy
How does increasing the speed of an object affect its kinetic energy?
It increases the kinetic energy.
How does height affect potential energy?
The higher the object, the greater its potential energy.
How does solar energy work?
It converts sunlight into electricity using solar panels.
Describe the energy transformation that happens when a toaster is used.
Electrical energy is transformed into thermal energy to toast the bread.
What do we call energy that is stored for later use?
Potential Energy
What happens to the kinetic energy of a ball when it is thrown into the air?
It decreases as it rises and increases as it falls.
Explain how potential energy is converted to kinetic energy when a rock is dropped from a three foot height.
As the rock falls, its potential energy decreases and is converted into kinetic energy.
What is wind energy?
Energy generated from the movement of air.
What is sound energy?
Energy produced by vibrating objects that creates sound waves.
A moving roller coaster car at the top of a hill has both kinetic and potential energy. Together, they make up this form of energy:
Mechanical Energy.
What is the relationship between kinetic energy and mass? For example, marbles of different mass and a ramp.
The larger the mass, the more kinetic energy is within the marble, thus the farther the marble will role.
When does a yo-yo have the most potential energy?
When it is at its highest point, before it begins to fall.
Name a disadvantage of using renewable energy sources.
They can be dependent on weather conditions and may require significant initial investment.
How does electrical energy travel?
Through electrical currents in conductors.