Past Paper Flashcards
In a fan, what happens to the wasted energy?
It is changed to thermal energy
What is the ‘Big Bang Theory’?
Expansion of space from a point of energy
Name two components the generator must contain
Coil of wire
Magnet
Explain why the voltage produced by this wind-powered generator is not always the same
The wind speed is not always constant
The voltage depends on wind speed
Describe differences in sensitivity of radiation of a human eye and a bee eye
Human eye can only see visible light
Bee eye can see different frequencies
A scientist wrote this sentence:
“Ultraviolet radiation is harmful to humans but useful to bees”
Explain what he means by this sentence
- Honey bees use uv radiation to find more food
- Bees can ‘see’ objects reflecting UV radiation
Describe how a reflecting telescope forms an image of a distant object
Mirror which is converging
State what an eyepiece of a telescope is intended to do to the image
The eyepiece magnifies
