Heat Transformation
3. AND 31. If there is a temperature difference in a system, heat will always move from _________ to _________ temperatures.
hot, cold
12. Energy transformations occur when energy ________ from one form to another
transforms
5. Stored energy or the energy of position is _______ energy.
6. _________ energy is the energy of motion.
potential, kinetic
30. Alternative resources such as wind and solar energy are needed to replace fossil fuels entirely. True or false?
False. We need it to supplement the use of non renewable resources
25. Chemical changes ALWAYS produce a
new substance
4. Warm air or water _________and cold water ______ because of _______________
rises, sinks, convection currents
11. Batteries and candles contain _________ energy
chemical
9. Write the Law of Conservation of Energy
energy cannot be created or destroyed, only transformed
21. "Renewable" means:
22. "Nonrenewable" means:
21. Capable of being renewed or replaced in a timely manner
22. Cannot be replaced in a short torm through natural measures
26. A precipitate is formed when
32. If the Starbucks cups below were set up with wires between each of them, which direction would the heat transfer? From __________ to _____________
left, right
10. During photosynthesis, plants make and store their own food. Which type of energy is responsible for this?
radiant
29. Give an example of maximum kinetic and minimum potential energy.
Example must show something moving at its fastest speed with no sort of potential energy. EX: Running down the hill at the very bottom
15. Energy from the Earth's heat, called _________ energy, creates steam to generate electricity in a power plant.
16. Nuclear energy is used to make steam when _________ atoms are split to create heat.
17. With _________ energy, moving water turns the turbine and generator to create electricity
left, right
23. In a science experiment, you must only change _____ thing. This is known as the _________ variable.
one, independent.
24. In the diagram below, A is hot and b is cold. When they are pushed together, the heat moves from A to B. In figure C, A and B have the __________temperature. This diagram show that heat moves from ________ to _______ areas until both areas have the ________ temperature.
same, hot, cold, same
14. Why does a power plant burn coal? Explain the energy transformation that occurs
chemical to thermal to mechanical to electrical. It burns coal to provide energy
8. When the bat hits the ball, what will happen?
A. Potential energy of the bat will be transferred to kinetic energy of the ball.
20. Do batteries cause pollution? _____ Explain:
Yes, because it is a form of chemical energy
27. Name the 5 types of evidences of a chemical change, and list one example for each
Unexpected color change
Unexpected temperature change
Light
Gas/Bubbles
Precipitate
2. Name and explain the three ways heat is transferred:
1) Conduction = heat transfer through direct touch
2) Radiation = heat transfers through waves
3) Convection = heat transfer by hot rising and cool sinking through convection currents
13. Name the types of energy at the points below in the power plant:
a) #2 = ________ energy
b) #4 and #5 = ________ energy
c) #6 to #7 = ________ energy
a) thermal
b) mechanical
c) electrical
7. Label the roller coaster below with the letters W, X, Y, Z to show the points: most kinetic, most potential, least potential, least kinetic
X/Z: At the top of roller coaster at point A.
W/Y: At the bottom of the roller coaster at point C.
1. If your house or apartment has a sprinkler system or outdoor lights that are "programmable", what does that mean?
Instead of leaving them on all of the time and wasting energy, you can program them to be on ONLY when you need them. This will save energy and resources.
28. What is the density of the substance below?
3.9