Light: Shadows and Reflections — Science STD 7 — Question

Fill in the blanks with the appropriate answers:

Three forms of water are ________, ________ and ________.

Pick the odd-one-out from each of the groups given below on the basis of respiratory organs. Give reason for your answer. cockroach, grasshopper, snail, ant.

Fill in the blank: The main cause of wind movement is uneven_________.

Algae and fungi form a unique association sharing benefits from each other. What is the name of association between them?

What is simple pendulum?

A child is on see-saw, what kind of motion he have and why? Explain.

Which part of the digestive canal is involved in: formation of faeces ____.

What is the direction of moving air?

Ram hast to grow wheat crop in his field, what kind of soil he will prefer?

Name the process by which energy is obtained by a living organism.