Page 4 - Class VI Worksheets Forces and Energy

SUBTOPIC: 3.4 Tides & 3.5 Energy
1 a) What do you mean by Udes?
b) What are the factors that contribute to the occurrence of Udes?
c) Explain the difference between high Ude and low Ude and their frequency per day.

2 a) Explain how the gravitaUonal forces of the Moon and the Sun contribute to the
formaUon of Udes on Earth's oceans.
b) Why is Moon's Udal force stronger than Sun?
c) Describe the mechanism behind the formaUon of high and low Udes on Earth,
considering the gravitaUonal pull of the Moon and the Sun.
d) How do Udes influence harbor usage, and why can some harbors only be accessed
safely at specific Umes of the day?

3 a) What do you mean by energy? Give some examples of different types of units.
b) What are different units of energy?

4 a) What kind of energy is stored when an object is in moUon?
b) Where is chemical energy stored, and provide examples of substances containing
chemical energy?
c) Explain the concept of gravitaUonal potenUal energy and provide an example of its
storage.

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