Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Physics Revision
2025 science
| Question | Answer |
|---|---|
| What is energy and what can it do? | Energy is the ability to do work and comes in different forms which can be transformed to perform different functions |
| What is potential energy? | Potential energy is stored energy and is the energy that an object contains |
| What are forms of potential energy? | Gravitational, elastic, chemical and nuclear |
| What is the potential energy formula? | PE=mass x gravity x height (mgh) |
| What is kinetic energy? | Kinetic energy is moving energy and is in anything moving including atoms |
| What are forms of kinetic energy? | Kinetic, light, thermal, sound and electrical |
| What is the Law of Conservation of Energy? | Energy can't be created or destroyed but transformed from one form to another. It can be transferred between objects. |
| What are the ten different forms of energy? | Potential, kinetic, gravitational, nuclear, chemical, elastic, sound, light, heat, electrical |
| What is energy transformation? Give an example as well. | When energy is transformed, it means it has changed from one form to another. For example, on a roller coaster potential energy changes to kinetic energy. This is an energy transformation. |
| What is energy transfer? Give an example as well. | Energy transfers can be transferred from one object to another without changing its from. The energy doesn't change type. Example: when your foot kicks a ball and kinetic energy is transferred from your foot to the ball. |
| A ball is held a metre from the ground. What energys are present? | Gravitational energy. Potential energy. |
| hi | hi baby |
| Draw an energy flow diagram for a kid playing in the pool | Chemical energy-->kinetic, heat sound energy |
| Draw a flow diagram to show the energy transformations that take place when the globe lights up. | Chemical energy-->Electrical energy-->Light and heat energy |
| Draw a flow diagram to show the energy transformations that happens in a phone when used | Chemical energy-->Electrical energy-->Light and sound and heat energy |
| 5. Name the unit used to measure energy. | Joules |
| Define the term of energy efficiency and define the different types of input/output energy's. | It's a measure of how much input energy is converted into useful output energy. Useful energy is the output energy that is wanted/desired. Input energy is the energy that you start with. Wasted energy is the output energy that is undesired. |
| How do you calculate the energy efficiency percentage? | Useful energy output --------------------------- X 100 Energy input |
| A toaster uses 500J to toast bread 450J from heat energy and 50J from light energy. Calculate the energy efficiency percentage. | 450/500 = 90% |
| A TV uses 500J to work. 350J from heat energy, 100J from light energy, and 50J from sound energy. Calculate the energy efficiency percentage. | 150/500=30% |
| Finish the sentence. Whenever there's kinetic energy there's also ____________. | Whenever there's kinetic energy there's also heat energy. |
| Fill in the blank. whenever there is a person or animal in a situation, there's always ________ energy present. | chemical |
| Give an example of wasted energy. | When we turn on a kettle and sound energy is produced. Self-mark answer, other answers can also be correct. |
| What are the 3 types of energy transfers to do with heat? | conduction, convection, and radiation. |
| Solar panels always use light energy from the sun. This means there are always at least 2 steps on an energy flow diagram when using solar panels. Write a flow diagram for a solar powered fan. | Light energy-->electrical energy-->kinetic, sound, heat energy |
| What is the difference between energy transfer and energy transformation? | Energy transformation is when energy changes from one form to another. Energy transfer is the movement of energy from one location to another. |
| Define the term energy efficiency. | Energy efficiency is a measure of how much input energy is converted into useful output energy. Input energy is the energy you start with, useful energy is the output energy that is desired. |
| What type of energy do solar panel powered technology use | light energy from the sun |
| Draw an energy flow diagram for a solar fan (solar powered fan) | light energy-->electrical energy-->kinetic, sound, heat energy |
| What's the difference between renewable and non renewable energy? | Non-renewable energy is a source of energy that will eventually run out, but renewable energy is produced using natural resources and will never run out. |
| A cup is sitting on a table. Which of the following would increase the cup’s potential energy? | Lifting it higher. Put on note btw. |
| Flow diagram for a car driving ( no lights) | Mechanical-->kinetic--> heat and sound put on note btw. |
| Flow diagram girl swimming in pool | Chemical--> kinetic heat and sound |
Created by:
SallyCat861
Popular Physics sets