Weather, Climate and Adaptations of Animals of Climate — Science STD 7 — Question

Classify the given motion:

Motion of a train on a straight bridge.

• straight line motion

• circular motion

• oscillatory motion

While using a toilet, Mohini noticed that used sanitary pads were scattered near the bin. She got upset and shared her feelings with her friends. They discussed the importance of menstrual hygiene and healthy sanitary habits. What menstrual hygiene and sanitary habits would you suggest to your friends?

Make a list of ten changes you have noticed around you.

Why do athletes breathe heavily after a race?

Name the device used these days in place of electric fuses in electrical circuits.

Monsoon brings rain. Explain the formation of monsoon.

How does baking soda help in relieving ant sting?

Predict what will happen if all wires used in homes are made of plastic.

Write differences between decomposers and scavengers.

Give an example of a chemical reaction for each of the following situation: A gas is evolved.