Bob Jones Science 9 Chapter 12 Energy and Momentum
Terms
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- Stored energy...
-
Potential energy
(measured in joules) 12A - Energy in motion...
-
Kinetic energy
(mesured in joules) 12A - Formula for potential energy...
-
PE=mgh
m = mass
g = 9.8 m/s2 (gravity)
h = height 12A - Formula for kinetic energy...
-
KE= 1/2 m v2
m = mass
v2= velocity squared 12A - The law of conservation or energy or the first law of thermodynamics...
- Energy can be changed from form to form but can never be created or destroyed. 12A
- Conservation principles govern...
- the way energy change from one form to another. 12A
- The capacity to do work...
- energy 12A
- joules units =
-
kg x m2
_______
s2
12A -
What are the eight types of energy?
The really short chemical engineer must make nickels. - Thermal, radiant, sound, chemical, electrical, magnetic, mechanical, and nuclear 12B
- Radiant energy travels in...
- waves. 12B
- Forms of this energy include x-rays, radio, light, and infrared rays...
- radiant energy. 12B
- Mechanical energy is in...
- everything that moves (KE) or anything that could move (PE) 12B
- Sound energy differ from light energy because...
- they have to travel through matter. 12B
- Themal energy is related to the...
- motion of molecules in matter. 12B
- Heat is the transfer of...
- thermal energy. 12B
- Photosynthesis and the energy used in growth or foods are examples of...
- chemical energy 12B
- The flow of charged particles through a conductor...
- electrical energy 12B
- This type of energy doesn't need matter for transmission...
- magnetic 12B
- Energy that comes from splitting a nucleus or fusing several small nuclei together...
-
nuclear
(discovered last) 12B - Newton's quantity of motion is now called...
- momentum 12C
- formula for momentum...
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p=mv
p=momentum
m=mass
v=velocity 12C - Law of conversation of momentum...
- momentum may be transferred from one object to another without a change in total momentum.
- Momentum is directly proportional to the _____ of an object.
- speed. This is why a small bullet can cause damage.