Types of Energy (HARD!)
As a car accelerates, its ___________ energy increases.
kinetic energy
transfer of heat through direct contact
pick one:
1. conduction
2. convection
3. radiation
conduction
Hair dryer
1 input to 3 output
electrical to mechanical (wind), thermal, and sound
This type of energy is a potential (stored) form found in fuels such as gasoline and foods.
chemical
campfire 1 input to 3 output
chemical energy to thermal, radiant, and sound
The units of measurement for energy
joules
this type of heat transfer explains why your attic is generally warmer than your basement (warm air rises; cold air sinks)
convection
flashlight
1 input to 1 intermediate to 2 output
chemical to electrical to light (radiant) and thermal heat
This form of energy is stored in the bonds between atoms
chemical energy (potential)
What has more kinetic energy:
1. A car with a mass of 3000kg traveling at 20 mph
2. A truck with a mass of 10,000kg traveling at 20 mph
2. A truck with a mass of 10,000kg traveling at 20 mph
Thermal energy (heat energy) is potential or kinetic?
kinetic
The calories from your lunch allow you to move your fingers to play the piano\
1 input to 1 intermediate to 1 intermediate to 1 output
Atoms are split or fused in large reactors to release the energy stored as what type?
Nuclear energy
A 5 kg object is falling with a velocity of 10 m/s and has a current height of 2 meters. What is the total energy (mechanical = potential + kinetic)
about 350 J (100 PE, 250 KE)
What are the standard units for temperature
degrees kelvin (K)
nuclear power plant
____ to _____ to _____ to ______
nuclear to thermal to mechanical to electrical