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Unit 4
Energy Vocab
| Test Answers | Test Questions |
|---|---|
| kinetic energy (KE) | What is the energy of a moving object due to its motion |
| (you need to be able to do this for the test use your powerpoint notes to study) | ***Make a graphic organizer showing the relationship of these words: Kinetic energy, potential energy and mechanical energy |
| mechanical energy | what is the sum of the kinetic and potential energy of objects in a mechanical system |
| potential energy | What is the stored energy resulting from the relative positions of objects in a system |
| power | What is a quantity that measures the rate at which work is done |
| Electrical, chemical, nuclear, and mechanical (see powerpoint if you don’t remember) | ***Describe three different forms of energy |
| work | What is a quantity that measures the effects of a force acting over a distance |
| force x distance | how do you calculate work? |
| work / time | how do you calculate Power (P) |
| an example would be how energy (power) can be transformed to run a machine (mechanical energy). | Explain how the different forms of energy can be transformed and transferred. |
| (you need to do this for the test..see powerpoint pictures | ***Draw and label examples of the three forms of heat transfer |
| calculating potential energy | what does this formula calculate? m x g x h (mass x gravity x height) |
| calculating kinetic energy | What does this formula calculate 1/2 x mass x velocity squared? |
| chemical energy | what is the type of energy from composition and position of atoms (type of potential energy) ? |
| electrical energy | what is the type of energy from the flow of electrons ? |
| nuclear energy | what is the type of energy from the splitting or combining of atoms? |
| law of conservation of energy | What describes the occurrence where energy cannot be created or destroyed? |
| conduction | what is it called when Energy is transferred by direct contact |
| perpetual motion machine....No, because energy transfers. | What is a machine called which would continue forever without further input of energy (theoretical) Is it possible???? |
| Law of Conservation of Energy | Why is energy is transferred? Example from chemical energy to heat energy, or electrical energy to heat energy....why does it transfer? |
| Kinetic Energy is Moving/motion. Potential energy is the potential energy due to height and mass of an object above the earth's surface. | Explain ow is Kinetic energy different from potential energy? |
| Temperature | A measurement of how fast molecules are moving is called? Hint: They have a high Kinetic Energy. |
| Solids are drawn fixed, liquids -draw them moving a little bit, and gases need to be drawn moving quickly. (like we did on the board) | ****Draw a solid liquid and gas particle showing relative motion of the atoms. |
| Rises | What way does a heated fluid travel? |
| Falls | What way does a cooler fluid travel? |
| Length | What changes a pendulum's period (wave back and forth)the most? |
| see energy diagram in notes | What is Thermal Energy and the properties and phases of Water as a solid, liquid, gas, plasma |
| describe: it's in my notes | What is a Plasma? |
Created by:
NJHS Physical Science
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