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Energy Review Page
| Question | Answer |
|---|---|
| What is Energy? | The ability to do work. |
| What is work? | Work is done when energy makes things move, go, or happen. |
| How are energy and work related? | Energy is needed to do work, work is done when you have energy. |
| What are Joules? | Unit of energy. |
| Why is energy NOT considered matter? | Energy doesn't take up space, and doesn't have mass. |
| What is Kinetic Energy? | Energy of movement. |
| Give 2 examples of KE. | Ball falling, moving your arm. |
| As KE increases, THIS also increases. | Speed. |
| What is Potential Energy? | Stored energy. |
| Give 2 examples of PE. | Ball being held by a string, holding on to something barely. |
| What is the Law of Conservation of Energy? | Energy cannot be created nor destroyed. Only the form can change. |
| What is an Energy Transformation? | When energy changes form. |
| Give an example of an energy being transformed. | Toaster - Electrical to Thermal Energy |
| How is PE transformed into KE? | When the object gains velocity. |
| Explain the roles of kinetic and PE when you throw a water balloon. | When you pull your arm back you create PE, but when you throw the object you make KE. |
| How can an objects' KE be changed? (Think about a roller coaster) | Going up gives you potential, going down gives you kinetic energy. |
| What happens to an objects potential energy as its KE increases. | The PE decreases. |
| What is Thermal Energy? Is it kinetic or PE? | Heat, it is KE. |
| Give some examples of thermal energy. | Hot chocolate, heat from the sun. |
| As atoms move faster and faster, what happens to their thermal energy? | The thermal energy increases. |
| What is Electrical Energy? Is it kinetic or PE? | Electrical Energy is electricity, and is both PE, and KE. |
| Give some examples of electrical energy. | Lightning, batteries. |
| How is electrical energy useful to people? | It powers all electricity. |
| What is Nuclear Energy? Is it kinetic or PE? | Nuclear Energy is radiation, it is a form of PE. |
| Give an example of where you might find nuclear energy. | A nuclear bomb. |
| What is Chemical Energy? Is it kinetic or PE? | Chemical Energy is |
| Give some examples of chemical energy. | Food, batteries |
| What is Radiant (Electromagnetic) Energy? | Energy that travels in waves. |
| Give 2 examples of electromagnetic energy. | Microwaves, and light |
| How is electromagnetic energy useful to people? | Electromagnetic energy is useful to people because when you use X-rays, they are used to see a persons bones. |
| What is Sound Energy? | Sound energy is what you hear. |
| What kind of energy are microwaves? | Electromagnetic Energy. |
| What kind of energy are X-rays? | Electromagnetic Energy. |
| How are X-rays useful to people? | When someone breaks a bone they use X-rays. |
| What is Temperature? | The average kinetic energy of moving molecules. |
| What is Heat? | The total kinetic energy of moving molecules. |
| Which has more heat: A cup of hot coffee or the earth's oceans? Why? | The earths oceans because |
| What is Conduction, Convection, and Radiation? | Conduction: Heat transfer by direct contact. Convection: Heat transfer by rising. Radiation: Heat transfer by electromagnetic waves. |
| What is light? | Light is the form of radiant energy that stimulates the organs of sight. |
| What is ROY G BIV? | The colors of the visible spectrum in order: Red, orange, yellow, green, blue indigo, violet. |
| Can Woodchucks chuck wood? | No |