2389.
General Science & Ability
Which type of lens is thicker at the centre than at the edges?
Convex lens
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2390.
General Science & Ability
What happens when opposite magnetic poles are brought together?
They attract each other
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2391.
General Science & Ability
What happens when two like magnetic poles are brought together?
They repel each other
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2392.
General Science & Ability
Which two poles does a magnet have?
North and south poles
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2393.
General Science & Ability
What simple machine is a sloping surface used to raise or lower loads?
Inclined plane
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2394.
General Science & Ability
What is the fixed pivot point of a lever called?
Fulcrum
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2395.
General Science & Ability
What simple machine consists of a rigid bar that pivots around a fixed point?
Lever
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2396.
General Science & Ability
What is convection?
Transfer of heat by the bulk movement of a fluid such as a liquid or gas
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2397.
General Science & Ability
What is conduction?
Transfer of heat through a material by interaction between neighboring particles without bulk movement of the material
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2398.
General Science & Ability
Which mode of heat transfer can occur through a vacuum?
Radiation
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2399.
General Science & Ability
In which three ways can heat be transferred?
Conduction, convection and radiation
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2400.
General Science & Ability
What is temperature a measure of in everyday physical science?
The degree of hotness or coldness of a body
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