Sound — Science STD 8 — Question

Name two planets having asteroids between them.

Name the process in which a coating of one metal can be deposited on the surface of another metal by using current from a battery.

Which parts wear away first in shoes? Give a reason for your answer.

Natural resources are nature’s free gift to us. Name two precious natural resources.

The moment we put our ear to the railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why?

Why do fall leaves rise in the air or trees bend when a strong wind blows?

"The laws of reflection only holds true for regular reflection". Is this statement true or false? Explain your answer.

Answer in brief. Protected forests are also not completely safe for wild animals. Why?

Name the microorganisms which can fix atmospheric nitrogen in the soil.