Topic 4 Keywords

Unit 4 Keywords

Biomass - plants used as a fuel

Capital resource - energy resource that once used is not replaced

Fossil fuel - energy resource made from the bodies of animals or plants that lived millions of years ago (coal, oil, gas)

Fuel - substance that can be burnt releasing heat energy and is an energy resource

Geothermal - energy transferred as heat inside the Earth

Hydroelectric - transforming the energy from moving water into electrical energy

Joules - unit of energy

Mineral oil - Crude oil usually found deep below ground, formed from the bodies of tiny sea creatures

Non-renewable - energy resources that cannot be replaced

Renewable energy resource - energy resource that is continually replaced

Solar Cell - device to transform sunlight directly into electricity

Solar energy - energy from the Sun

Solar panel - device to collect solar energy

Thermometer - device for measuring temperature

Transform/transformed - to change the voltage of electricity

Posterous!

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Posterous!

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http://michellephysics.posterous.com/

Scientific facts I need to remember for next time (EOY10 exam)

Components which affect the size of the current can be...

- resistor

- power supply 

but NOT ammeters or switch

Q: A lorry is traveling in a straight line and it is accelerating. The total forward force on the lorry is F and the total backward force is B.

Which is larger, force F or force B? Explain your answer.

A: Force F, because there must be an unbalanced force in order for the lorry to move and accelerate (in this case, moving forward, so force F is bigger).

The characteristic in which all electromagnetic waves share....

- SAME speed (not just speed!)

- They're all electromagnetic waves.

addition: Speed can affect both thinking and braking distance.