Hydrosphere refers to the combined mass of water :

1. in the oceans
2. rivers, streams and lakes
3. in the atmosphere
4. All of the above.

Underground water is found in:

1. soil
2. subsoil
3. underground streams
4. All of the above.

Name the oscillatory movements in water, manifested by an alternate rise and fall of the sea surface.

1. Tides
2. Waves
3. Spheres
4. Oscillations

Apogee : Earth-moon distance …………… :: Perigee : Earth-moon distance ……………

1. maximum, minimum
2. minimum, maximum
3. equal, equal
4. All of the above.