Ques:Q: Forces which cause objects to turn around continuously in a circle are known as? Choices: - frictional forces - tension forces - hydrodynamic forces - centripetal forces A:

Ans:centripetal forces
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Ques:Q: A life cycle continues through reproduction and what? Choices: - response - mechanical - example - development A:

Ans:development
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Ques:Q: Limestone is insoluble in water, so what can dissolve it? Choices: - calcium - dioxide - oxygen - acid A:

Ans:acid
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Ques:Q: Potential energy is present in objects that are what? Choices: - crystals - rigid - unstable - elastic A:

Ans:
elastic
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