Forms of Energy
energy in motion
What is kinetic energy
What law states that energy can only be transferred
The law of conservation of energy
solar panels use ________ ___________ to create electricity
solar energy
How many kilowatt hours (kWh) is used if a 250 watt appliance is left on for 100 hours?
25 kWhs
energy carried by sound waves
A light bulb transforms electricity into what two forms of energy?
radiant and heat/thermal
Gravitational energy of water used to spin a turbine
hydroelectric
If electricity costs $0.05 per kWh and my bill was $50, how many how many kilowatts did I use?
1000 kWhs
energy an electric current carries
what is electric energy
A vehicle's brakes covert kinetic energy into thermal energy by creating ___________
friction
The three types of fossil fuels
petroleum (crude oil)
natural gas
coal
What is the K.E. of a 50 kg object going 2 m/s
100 J
food and gasoline are examples of?
potential chemical energy
Kinetic energy depends on what factors
mass and velocity
T or F, burning fire wood for fuel is a renewable resource
True
What is the mass of an object that moves 150 m/s and has a K.E. of 562.5 J
0.05 kg
Produced by the Sun, also microwaves, radios and cell phones
what is radiant energy
something has to be moved/displaced
Wind energy is a form of what?
solar energy
K.E. = 576 J
Mass= 32 grams
Velocity=
6 m/s