Q1.
Locate the five oceans and, in the table below, mark the hemisphere or hemispheres they belong to.
Answer
Find the Equator on Fig. 2.3 — it is the dashed line running across the middle of the map. Everything above it is the Northern Hemisphere, everything below it the Southern Hemisphere. Now read off each ocean:
| Ocean | Northern Hemisphere | Southern Hemisphere | Why |
|---|---|---|---|
| Pacific Ocean | ✓ | ✓ | It stretches from the Bering Strait in the far north right down to the Southern Ocean, so the Equator cuts straight through it. |
| Atlantic Ocean | ✓ | ✓ | The same — it runs from Greenland in the north to Antarctica in the south. |
| Indian Ocean | ✓ | ✓ | Most of it lies south of the Equator, but its northern arms — the Arabian Sea and the Bay of Bengal, on either side of India — are in the Northern Hemisphere. |
| Southern Ocean | — | ✓ | It is the ring of water around Antarctica, entirely in the far south. |
| Arctic Ocean | ✓ | — | It surrounds the North Pole, entirely in the far north. |
In both hemispheres: Pacific, Atlantic, Indian
Northern Hemisphere only: Arctic
Southern Hemisphere only: Southern (Antarctic)
Northern Hemisphere only: Arctic
Southern Hemisphere only: Southern (Antarctic)
Size order, from the same map: Pacific (largest) → Atlantic → Indian → Southern → Arctic (smallest). An easy way to remember it: P–A–I–S–A.
Why three oceans lie in both halves: the Pacific, Atlantic and Indian Oceans all run north–south, so the Equator has to cross them. The Arctic and Southern Oceans run around a pole, east–west, so they never come near the Equator at all.