Forces and Motion 1
Which force reduces the speed of a car?
Friction
When the speed of something increases, it is called...?
Acceleration
Which type of energy is released from a fire? Name 2.
Thermal energy, sound energy, light energy.
Which part of the atom is moving when electricity is flowing?
Electrons
Which raw material is paper made out of?
Wood
Which famous scientist discovered gravity?
Sir Isaac Newton
Name all 3 ways of saying "gravity" in Swedish.
Tyngdkraft, dragningskraft, gravitationskraft.
Potential energy (lägesenergi).
What two things make up the nucleus of an atom?
Protons and neutrons
Which rock does iron come from?
Iron ore (järnmalm).
Which scientist did the famous "dropped ball experiment" from the Leaning Tower of Pisa in Italy?
Galileo Galilei
How do we say "luftmotstånd" in English?
Air resistance
Which unit is energy measured in?
Joules (J)
What metal are electrical wires made from?
Copper
To make 1 tonne of paper, how many tonnes of wood do you need?
2 tonnes.
What unit is force measured in?
Newtons (N)
A rabbit runs at a speed of 20 m/s. How long does it take to run 60 metres?
3 seconds
What is the Energy Principle?
Hydropower (vattenkraft)
When did humans first start using copper? Give your answer to the closest 1000.
10 000 years ago
What is the formula to calculate average speed?
Distance / time
When you hang a 600g weight off a Newtonmeter, how many Newtons are shown?
6N
Name 4 types of non-renewable energy.
Coal, oil, natural gas, petrol, diesel, crude oil, nuclear.
Positive
How long does it take for chewing gum to break down in nature? Give your answer in a 5 year window.
20-25 years.