give reasons for the following sentence
1) penguins can easily live in poverty polar regions.
2) the winds flow from the sea towards the land in summer.
3) place a crumpled piece of paper on the mouth of an empty bottle and it comes outside when you blow air inside the bottle.
Answers
Answer:
(1) Their adaptations include: a white appearance - as camouflage from prey on the snow and ice. thick layers of fat and fur - for insulation against the cold. a small surface area to volume ratio - to minimise heat loss.
(2) The air over the land gets heated and rises creating a low pressure area. The cooler air from over the oceans(being at higher pressure), rushes towards the land. This causes the wind to blow from the oceans towards the land. The winds blowing from the oceans towards the land in summer are called monsoon winds
(3)WHEN WE BLOW INTO THE MOUTH OF THE BOTTLE,THE AIR NEAR THE MOUTH HAS HIGHER SPEED. THIS DECREASES THE PRESSURE THERE. THE AIR PRESSURE INSIDE THE BOTTLE IS HIGHER THAN NEAR THE MOUTH. THE AIR INSIDE THE BOTTLE PUSHES THE BALL OUT.