Question 2: Which is the largest continent on earth?
Question 3: The air that we breathe comes from
Question 4: Which ocean takes up about half of the earth’s surface?
Question 5: One rotation of the earth takes a period of
(a) 12 hours
(b) 24 hours
(c) 6 hours
(d) 18 hours
(a) The large bodies of land on the earth’s surface are called ______________.
(b) Earth has a protective blanket of ______________.
(c) It takes 3651/4 days to complete one ______________.
Question 7: Name three factors that have made life possible on earth.
Question 8: What is an orbit and what is its shape?
Question 9: Distinguish between rotation and revolution.
Question 10: Define ocean.
(a) The Pacific Ocean is the smallest ocean.
(b) The earth completes one rotation in 3651/4 days.
(c) One-fourths of the earth’s surface is covered by land.