Worksheetschap 15
Total questions: 14
Worksheet time: 8mins
What units are used to measure energy
Joules
Meters
Kilograms
Units
What is the equation for kinetic energy?
KE=mgh
KE = ½ mv2
PE=mgh
KE = ½ mv
What is the equation for gravitational potential energy?
PE=mgh
PE=1/2mgh
KE=1/2mv²
PE=1/2mv²
What are the six major forms of energy?
Mechanical (moving car), Thermal (hot iron), Chemical (food)
Nuclear, Electrical, and Function
Mechanical, Kinetic, Chemical
Nuclear (uranium fuel pellet/nuclear fission), Electrical (electricity), and Electromagnetic (light)
What is true about the potential energy of a stone resting on the edge of a cliff and the kinetic energy of the stone when it hits the ground below?
The initial potential energy of the stone (which is moving) is equal to the final kinetic energy (when it is on the ground with zero gravitational potential energy.
The initial potential energy of the stone (which is not moving) is equal to the final kinetic energy (when it is on the ground with zero gravitational potential energy.
The initial potential energy of the stone (which is not moving) is more than the final kinetic energy (when it is on the ground with zero gravitational potential energy.
Examples of energy conversion?
Moving a matchstick (Kinetic Energy - Mechanical) to create heat (Thermal Energy)
Burning wood: Chemical Potential Energy to Light (Electromagnetic) and Heat (Thermal)
A ball that stays still
Compressing a spring: Kinetic (Mechanical) Energy to Elastic Potential Energy (also Mechanical)
Energy created from wood, peat moss, and manure is called __________________ energy.
biomass
geothermal
natural
solar
The use of flowing water from waterfalls and dams to produce electricity.
HYDRO & TIDAL POWER
SOLAR ENERGY
WIND ENERGY
NUCLEAR ENERGY
Energy stored in the earth in the form of heat.
GEOTHERMAL
SOLAR ENERGY
WIND ENERGY
NUCLEAR ENERGY
Renewable energies are biomass, geothermal, hydroelectric, and solar
TRUE
FLASE
Non-renewable energies are coal, oil, natural gas, and uranium.
True
False
Energy conversation is...
Energy resources can be conserved by reducing energy needs and by increasing the efficiency of energy use.
Energy resources cant be conserved by reducing energy needs and by increasing the efficiency of energy use.
Energy resources can be conserved by reducing energy needs and by decreasing the efficiency of energy use.
The pros and cons of the renewable resources
Solar: no greenhouse gasses/pollution when in use (Pro), Expense/Pollution in creating panels (Con)
Geothermal: no greenhouse gasses/pollution (Pro), is only available in certain places (Con)
Hydroelectric: no greenhouse gasses/pollution (Pro), disrupting bio habitats (Con)
