Energy
What are 2 things that use ELECTRICAL energy?
TV, toaster, tablet, oven, computer, AC, etc...
Can energy be destroyed? If no, what happens to it?
No, energy simply changes form.
What is light energy?
Energy we can see that travels in a straight path.
What are the 3 main types of renewable energy? What are the 3 main types of nonrenewable energy?
Wind, water, sun Fossil fuels: Coal, oil, gas
What is electricity? What is it made from?
The energy you get when electrons flow from place to place. Can be made from renewable and nonrenewable sources (sun, water, wind vs coal, natural gas)
What is energy?
The ability to do work/ "power"
What is a transformation begining with chemical energy?
Battery to electricity, light.
Food to mechanical, thermal.
Gasoline to mechanical, light, thermal, sound.
What colour is light?
All the colours of the rainbow.
What is the difference between a RENEWABLE and a NONRENEWABLE energy scource?
Renewable resources CANNOT be used up, while nonrenewable resources will eventually be used up
What is a circuit?
A circuit is a complete path around which electricity can flow.
What are the 6 main types of energy?
Electrical, Thermal, Mechanical, Light, Chemical, Sound.
What transformation happens with a campfire? (What to What?) *It cannnot end with "Sound"
Chemical energy (wood) to thermal/ light energy
What happens when you see yourself in a mirror?
Reflection.
What is the MOST used type of energy in Québec? What are its advantages and disadvantages?
Hydro electricity. A: Cheap to run, little pollution, reliable, can be controlled. D:Damage to wildlife and landscape, pollution to build
What is the difference between a series and a parell circuit? Which is more common?
In a series circuit, electricity has only ONE path, while in a parallel circuit, electricity has MULTIPLE paths. Series circuits are more common because they are cheaper to manufacture, but paralell circuits are more reliable.
What are 2 examples of CHEMICAL energy?
Battery, eating food, burning fossiln fuels/ coal etc...
What transformations happen when you use a cell phone. (What to What?)
Electrical/ chemical energy to thermal/ light/ sound energy.
How do we see colours?
When (rainbow) light hits a surface, only one colour comes off the surface, all the other colours are absorbed.
What are 2 advantages and 1 disadvantage of wind energy?
A: No pollution, cheap once running. D: Unreliable, noisy, takes up land, expensive to build, harm to birds/bats
What is the difference between a conductor and an insulator? Name one of each.
Conductors allow heat/electricity to flow through (metal, water, humans)
Insulators block heat/electricity from flowing through (plastic, rubber, cotton)
What is the difference between kinetic and potential energy? Give an example of each.
Potential energy is stored (battery), while kinetic energy is released (kicking a ball).
Name 3 types of transformations begining with ELECTRICAL energy. *they MUST all end with different types of energy.
Toaster to heat
TV to sound
Cell phone to light etc..
What happens when you see a pencil "bending" in water?
Refraction.
What energy source is LEAST used in Québec? What are its advantages and disadvantages?
Solar energy. A: Cheap to run, no pollution. D: Not reliable, expensive to build
What MUST be included in a circuit? What can you add to make turning it on/off easier?
POWER SOURCE (battery or outlet), CONDUCTOR (metal wires), and a LOAD (device).
Switch.