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Unit 4
Energy Vocab
| Test Answers | Test Questions |
|---|---|
| kinetic energy (KE). Potential energy (PE). Mechanical energy (ME) PE + KE = ME | What is the energy of a moving object due to its motion. Position, and the combination of both of these in a system. |
| power P = W/T in Joules/sec | 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) Example: Chemical Energy is in your food bonds and when you eat food it realeases that energy to your body. | ***Describe many different forms of energy using examples. Be able to label the types when given a senario. |
| Work (in Nm or Joules) W= Fd | What is a quantity that measures the effects of a force acting over a distance and going in the same direction? |
| 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 be able do this for the test..see lesson notes/ pictures. | ***Draw and label examples of the three forms of heat transfer- conduction convection and radiation |
| 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- fission/fusion |
| law of conservation of energy | What describes the occurrence where energy cannot be created or destroyed? |
| Law of Conservation of Energy- it can be neither created nor destroyed | Why is energy is transferred? Example from chemical energy to heat energy, or electrical energy to heat energy....why does it transfer? |
| Temperature | A measurement of how fast molecules are moving is called? Hint: They have a high Kinetic Energy and that is what makes them hot. |
| 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 by using errows around the atom relative to the size of the energy in the atom. |
| 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 your lesson notes | What is a Plasma? |
| Transfered into different forms of energy, gravity, heat, air molecules or friction. It depends on the example being used. | Where does energy go if it can't be destroyed? |
| This system can't do two things at the same time. Water is either changing phase or heating and cooling. | Why are there flat locations on the graph of water going from a solid to a gas? |
| Cheese has a higher specific heat capacity and transfers the heat faster than the crust. | Why does pizza sauce and cheese burn your mouth when the bread crust does not. Remember it is all coming from a 300 degree oven and they are both at 300 degrees. |
| Curling iron- conduction, Fire- readiation, heating a pan of water- convection | label multiple examples of conduction convection and radiation in given senarios. |
| From hot to cold. | Which way does temperature flow? |
| Convection | heat rising and falling in a substance. Like heating water in a pan. |
| Radiation | Energy that is felt as heat when not toching it. Like the Sun. |
| Conduction | Heat transfer by directly touching the source of heat. |
Created by:
NJHS Physical Science
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