Question

II A. Answer in 2/3 sentences.(Any 4)
1. How can we keep our bones and muscles healthy?

2. What is a reflex action? Give one Example

3.When is a shadow formed?

4.What is a global warming?

5.List 2 safety measures that one should take during an earthquake?

II B. Answer in brief (Any 3)

1.State the effects of water pollution

2.Why do you see different phases of the moon?

3.Explain solar eclipse with a
diagram.

4.Draw and describe a wheel and axle.
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Answer 1

Answer:

1. Ans Eat lots of Vegetables

2.perform strength training and weight bearing exercises

2.shadows are formed when an opaque object or material is placed in the path of rays of light

3. climate change includes both global warming driven by human emissions of green house gases and the resulting large scale shifts in weather patterns

4. avoid power lines.

if you are in stadium stay in your seat

2. answer in brief

1. destruction of biodiversity
2. contamination of the food chain
3. lack of portable water
4. disease
5. infant mortality