Crop Production and Management — Science STD 8 — Question

Give any one precaution to take care of eyes.

Explain why, sportsmen use shoes with spikes.

Pahell, on the other hand is worried about this period of life when you are neither a child nor an adult. She wondered whether this period between childhood and adulthood had a special name.

Two tiny holes are made in a plastic bucket, one near the middle part and the other just above bottom when this bucket is filled with water, the water rushes out from the bottom hole much faster than from the upper hole. What conclusion do you get from this observation?

Name the outermost layer of an animal cell.

Is gravity a property of Earth only?

Does the application of a force would always result in a change in the state of motion of the object ?

Name any two special chemicals which are used as food preservatives.

Name one animal which can produce ultrasonic sounds.

Name any five threatened wild animals which are protected and preserved in our wildlife Sanctuaries.