2245.
General Science & Ability
Is speed a scalar or vector quantity?
Scalar quantity
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2246.
General Science & Ability
What is velocity?
The rate of change of displacement with time, including direction
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2247.
General Science & Ability
What is acceleration?
The rate of change of velocity with time
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2248.
General Science & Ability
What force keeps an object moving along a circular path toward the centre of the circle?
Centripetal force
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2249.
General Science & Ability
Which simple machine is formed by two inclined planes joined back-to-back?
Wedge
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2250.
General Science & Ability
Which simple machine consists of a grooved wheel with a rope or cable running around it?
Pulley
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2251.
General Science & Ability
What does Pascal's principle state about pressure applied to a confined fluid?
The pressure is transmitted undiminished throughout the fluid
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2252.
General Science & Ability
According to Archimedes' principle, what determines the buoyant force on an immersed object?
The weight of the fluid displaced by the object
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2253.
General Science & Ability
What property causes the surface of a liquid to behave like a stretched elastic film?
Surface tension
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2254.
General Science & Ability
What does biodiversity refer to?
The variety of living organisms, including diversity within species, between species and of ecosystems
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2255.
General Science & Ability
What natural process removes carbon dioxide from the atmosphere and stores carbon in plant matter?
Photosynthesis
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