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Card 16
Front
Explain the difference between a luminous and a non-luminous object
Back
Card 17
Front
Describe one use of optical fibres in medicine, making clear the special properties of the fibre that make it suitable for the use described.
Back
Card 18
Front
a transformer may be described as a device that transfers electrical energy from one circuit to another. Describe how it does this.
Back
Card 19
Front
State where step-up and step-down transformers are used in the transmission of electricity to consumers
Back
Card 20
Front
What is 27 000 light years?
Back
Card 21
Front
describe the major difference between these two models. In the Heliocentric Model,and In the Geocentric Model
Back
Card 22
Front
Give one scientific observation which can be explained well by the Heliocentric Model and cannot be satisfactorily explained by the Geocentric Model.
Back
Card 23
Front
When the Heliocentric Model was first proposed it experienced considerable opposition. Where did most of this opposition come from?
Back
Card 24
Front
In the Northern Hemisphere it is generally warmer in summer than it is in winter. Explain carefully why this is so
Back
Card 25
Front
Is the gravitational force between Phobos and Mars increasing, decreasing or remaining constant as Phobos orbits Mars? Give a reason for your answer.
Back
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