Topic 1
Topic 2
Topic 3
Topic 4
Miscellaneous
100
Is geothermal energy reusable?
Yes, because its source is natural heat generated and stored inside the Earth
100
Energy cannot be ________ or ________, it can only be ___________ into another type.
Energy cannot be created of destroyed, it can only be transformed into another type.
100
Why does a bimetallic strip bend?
Because the strip is made of two different metals, one metal expands more then the other causing the strip to bend
100
Which type of energy transfer only works on solids and why?
Conduction, it uses direct contact
100
State the shape, space between particles, and particle movement of a liquid
Shape - takes the shape of it's container
Particle Space - medium
Particle Movement - particles move past each other freely
200
What are the pros and cons to solar energy?
Pros - clean energy that is guaranteed not to run out
Cons - solar energy is not available when the sun does not shine (night) and less is available in the winter
200
Where does energy move?
Energy moves from most amount of energy to least amount of energy.
200
What is a bimetallic strip?
A bimetallic strip is made up of two metal fused together that bend when heat is applied. They help control the heat in your house by alerting the furnace to turn on and off.
200
List one example of where we see each; conduction, convection, radiation
ex. conduction - sitting on a cold rock, hot mug to hand
convection - boiling water, shore of lake/ocean
radiation - x-rays, nuclear bombs
200
What is the best hockey team in the NHL?
Edmonton Oilers
300
Name all five of the sources of energy we discussed in class
Electric, Geothermal, Solar, Wind, Fossil Fuel
300
What are four of the five points in the particle model of matter?
1. All matter is made up of tiny particles.
2. Particles are always in motion
3. Particles have space between them
4. Particles in a substance are attracted to one another 5. Particles in a pure substance are the same
300
Where does water boil the fastest and why? (Calgary or Vancouver)
Calgary is at a higher altitude than Vancouver, which means that particles are further apart. The means that it takes less energy to split the particles, so the water will boil faster in Calgary.
300
What is this diagram showing and what does each arrow mean?
A convection current. The particles by the heat source are hot so they rise up, as they rise the particles begin to cool off. Once they have cooled off the begin to fall back down to the heat source and the pattern repeats.
300
List at least two insulators that you would NOT used to insulate a wall and two insulators that you would NOT use to insulate a jacket and explain why
Wall - paper, sawdust etc. - paper and sawdust are too flammable
Jacket - wood, glass, paper etc. - a wood or glass jacket would be very uncomfortable and paper would fall apart with water (would not hold up)
400
Which type of energy can be produced using hydro-electric dams? How do the dams work?
Electric energy, dams use the energy of falling water which is transformed into electric energy
400
What are expansion and contraction?
As temperature changes, the space between particles changes. Expansion happens when an increase in temperature causes energy to move into the substance, which makes the particles speed up and spread apart. Contraction is opposite.
400
How does a thermometer work? (expansion and contraction)
On a cold day, thermal energy removed from the red stuff in the thermometer. This causes the particles in the red substance to move closer together (contract). The substance will then decrease in volume (go down). Opposite happens on a hot day.
400
What is radiation and what states of matter does it happen in?
Radiation is the transfer of energy without the movement of particles. Radiant energy travels in waves, and it happens in all states of matter.
400
What states of matter do conduction, convection, and radiation work on and which one would be used to boil pasta?
Conduction - solids
Convection - fluids (liquids/gases)
Radiation - all
Convection would be used as the water boils using a convection current
500
What are fossil fuels and how do we access them?
Fossil fuels are chemicals from plants and other organisms that decomposed millions of years ago and were preserved underground. We can extract these fuels from the ground and turn them into natural gas/ petroleum oils.
500
What is the difference between Heat and Temperature?
Heat is thermal energy transferred from one substance to another due to temperature difference. Temperature is the relative measure of how hot of cold something is.
500
How does a fridge work?
The refrigerant enters the fridge as a liquid, and absorbs the heat from the food. It then turns into a gas and travels outside the fridge area. It is then compressed back into a liquid which causes the heat to be released and the process starts again.
500
What stops each type of energy transfer? (conduction, convection, radiation)
Conduction - space
Convection - vacuum/seal
Radiation - materials that absorb, transmit, or reflect
500
List three insulators that you would use in a winter jacket
Air, Feathers, Wool, Cotton etc.