Energy and its properties
Define energy.
the capacity to produce changes
What are the two types of energy sources?
renewable and non-renewable
Fill in the blank: __ __ use energy sources to produce electricity.
Power stations
Define electric current.
the electricity that flows through wires and electrical devices
when it is produced and used in a way that causes minimum negative impacts
Which type of energy: moving objects, such as a car or a spinning top
mechanical energy
Define non-renewable energy sources.
cannot be renewed, so will eventually run out
Fill in the blanks.
Hydroelectric power stations use __.
Wind power stations use __.
Thermal power stations and nuclear power stations use fuels to heat water and produce __.
water; wind; steam
What are the two types of materials related to electric current?
conductors and insulators
What are 3 ways we can be sustainable with our energy?
turn off devices when not in use, use heating and air conditioning systems correctly, choose energy-efficient products at home, cycle/use public transport/walk, use energy from renewable sources
If you can ask me to translate a word into Spanish and I can't, you get the points.
Jules is so smart and awesome!
Define renewable energy sources.
sources that quickly replentish themselves and do not pollute
Can power stations store the electricity that they produce?
Which material lets electricity pass through easily, and which does not?
conductors; insulators
red, white, and blue
What are the 4 properties of energy?
energy can be transferred, stored, transported, and transformed
What are the two non-renewable energy sources?
fossil fuels and nuclear fuels
How does electricity travel from power stations to the homes or industries that use it?
long wires called power lines
Define electric circuit.
a closed path around which electricity can flow
If you can ask me to translate a word into Spanish and I can't, you get the points.
Wow Jules is so cool.
What are the 6 forms of energy?
light energy, chemical energy, mechanical energy, nuclear energy, thermal energy, electrical energy
What are the 5 renewable energy sources?
the sun, water, wind, internal heat of the Earth, biomass
What are the two parts/steps of a power station?
1. mechanical energy from water/wind/steam rotates the turbine
2. the turbine is attached to a generator that produces electricity
What are the four main components of an electric circuit?
generator (provides the energy), switch (turns on and off), output device (transforms electrical energy), wire (conducts the current)
What are the two issues with using energy irresponsibly?
depletion of resources and pollution of the atmosphere