This page contains Year 7 Energy Topic covered in class.
Energy Introduction 🔥
Potential Energy Transfers 🔋🍋🍎
Energy Transfer and Transformations 🚴 🔥
Energy, Light 💡
Energy, Sound 🔊
Steam POWER! 😤💨
Electric circuits ⚡
Sources of Electricity 💨🌊☀️➡️⚡
Efficiency of electricity (extension)
Breaking down conservation of energy 🕯️
Year 7 Energy Topic Vocabulary
Below is a list of all the key words used during this topic, there is also a link for a Vocabulary activity which will allow you to revise the key terms. https://www.quia.com/jg/395550.html
| Energy | ability to cause changes in matter |
| Law of conservation of energy | law that states that energy cannot be created or destroyed |
| Potential energy | energy that is due to the position or condition of an object |
| Kinetic energy | energy of motion |
| Thermal energy | kinetic energy of the moving particles of a substance |
| Heat | movement or transfer of thermal energy |
| Convection | transfer of thermal energy through fluids or gas |
| Radiation | transfer of thermal energy as waves |
| Conduction | transfer of thermal energy by touch |
| Transfer | energy type stays the same. E.g. flame heat to boil water |
| Transformations | energy type is changed into another form. E.g. chemical to kinetic |
| Efficiency | the measure of how much useful energy is transferred or transformed from one state to another. |
| Vacuum | the absence or lack of air |
| Battery | a chemical storage of potential energy |
| Resistor | slows down the flow of electrons in a circuit |
| Magnet | substance in which all the domains are aligned in the same direction |
| Electricity | interaction of electric charges |
| Electric energy | movement of electric charge from one place to another |
| Circuit | connection between the poles of an electrical energy source |
| Conductor | a material that allows electrons to flow |
| Insulator | a material that restricts the flow of electrons |
| Electromagnet | magnet that can be turned on and off at will |
| Chemical energy | form of potential energy stored in reactants |
| Nuclear energy | energy contained in the bonds that hold the protons and neutrons of an atom’s nucleus together |
| Fission | process of a nucleus breaking into two parts |
Extension Food Energy
Year 7 Science: Food and Energy – Laptop Activity
Task: Calculate the Energy in Your Food
What you will do:
You will investigate the energy content of different foods and compare that energy to how much you use when doing activities.
Steps to follow:
- Learn about energy in food
- Research what calories or kilojoules mean and why we measure energy in food.
- Find food energy information
- Choose 3–5 common foods or snacks.
- Look up the energy content (calories or kilojoules) for a serving of each food online.
- Calculate your total energy intake
- Imagine your meals for one day (breakfast, lunch, snacks).
- Use a spreadsheet (like Google Sheets) or write down the energy amounts.
- Add up the total energy you would consume.
- Compare with energy use
- Find out how much energy people use doing different activities (e.g., walking, running, sleeping).
- Compare your total food energy with the energy used during these activities.
- Write your thoughts
- Answer these questions:
- How does the energy from food help your body?
- Why is it important to balance how much energy you eat with how much you use?
- Answer these questions:
Tools you can use:
- Internet for research
- https://caloriecontrol.org/healthy-weight-tool-kit/food-calorie-calculator/
- https://www.eatforhealth.gov.au/nutrition-calculators/daily-energy-requirements-calculator
- Google Sheets or Excel
- Any calculator
Mr Danic 