Quiz Answers
- AU stands for Astronomical Unit. It is the mean distance of Earth to the Sun or about 150 million kilometres.
- b) Our solar system. The Kuiper Belt is a disc of icy bodies, which includes many dwarf planets including Pluto, lying between 30 to 50 AU from Earth.
- a) a large igneous rock formed deep underground.
Frass is a mixture of faecal matter and plant material left by wood boring insects that feels like sawdust. - c) The biggest wind turbine is 198 metres tall and the blades’ diameter is 126 metres. That's nearly ten 13-metre T Rex dinosaurs standing end to end.
- A wind turbine works the opposite way to how a small electric fan in your home works. An electric fan uses electricity to spin the blades making the wind that cools us down. A wind turbine uses that wind that cools us down to spin the blades, which causes a generator to make electricity. We can use this electricity to run our small electric fan.
