A roller coaster car with mass 55 kg is 23 m above the ground. How much gravitational energy is it storing? g = 9.8 N/kg
12397 J
When you burn coal, the chemical energy is transferred as what type of energy?
Thermal + Light
A laptop transfers electrical energy to light, sound and thermal. Which type of energy is considered wasted?
Thermal
What type of energy is stored in fuels such as coal?
Chemical energy
A pen with mass 100g sits on a desk 1m above the ground. How much gravitational potential energy is the pen storing? g = 9.8 N/kg
0.98 J
Name 3 sources of renewable energy
wind, solar, wave, tidal, geothermal, gravitational potential energy
Can energy be created?
No, only stored or transferred
Name three sources of energy which are fossil fuels
Oil, Coal and Natural Gas
An elastic band with a spring constant of 1.2 J/m is stretch 14 cm. How much elastic potential energy does it store?
0.01J
Friction is a force which transfers energy in what form?
Thermal (heat) energy
What type of energy is store in a battery?
Chemical Energy
What is the name of the energy store when objects are up high?
Gravitational potential energy
By what process does heat energy move through a vacuum?
Radiation
A roller coaster has 2500J of gravitational energy at the top of a loop. (assuming there is no friction) How much Kinetic energy does it have on the ground at the bottom of the loop?
2500J
When a tennis ball is drop it transfers gravitational potential energy into which type of energy?
Kinetic
Burning fossil fuels releases sulfur oxides into the atmosphere. What negative environmental effect can sulfur oxides cause?
Acid rain
A TV transfers electrical energy in to what 3 types of energy?
Light, Sound and thermal
What type of energy is transferred around a circuit?
Electrical
What gas is a product of burning fossil fuels, that contributes to the greenhouse effect?
Carbon Dioxide CO2
A runner of mass 55 kg is travelling with a velocity of 1.3 m/s. how much kinetic energy is the runner storing?
46 J
What is the name of the movement energy store?
Kinetic energy
A horse of mass 102 kg is running at a velocity of 3.9 m/s. How much kinetic energy is the horse storing?
776 J
A Bike and rider of mass 65 kg is travelling with a velocity of 2.3 m/s. How much kinetic energy is the biker and rider storing?
172 J
What type of energy is stored in a sandwich?
Chemical Energy
By What process does heat energy move through a gas or liquid?
Convection
What source of energy is non renewable, but not a fossil fuel?
Nuclear (Uranium 235)
What is the force used by the brakes of a bike, to transfer kinetic energy into thermal energy?
Friction.
A bungee jumper with mass 71 kg stands at the top of a bridge 42 m high. How much gravitational potential energy is the jumper storing? g = 9.8 N/kg
29224 J
By what process does heat energy move through a solid?
Conduction
A cars brakes transfer the kinetic energy of a moving car into what type of energy?
Thermal
A toaster transfers electrical to thermal and light. Which type of energy is considered wasted?
Light
What type of energy is store in the nucleus of an atom?
Nuclear energy
Energy from the sun is transferred to earth as what type of energy?
Light