General Physica...

Tides are of various types, caused by different alignments of Sun, Moon and Earth. Choose correct statement.
1. Height of high tide and low tides at different places in different oceans, differs. 
2. At perigee, spring tide gets abnormally high.
3. Same place will have another spring tide after 12 hours exactly.

Regarding Apogean tide, choose the correct statements.
1. When Sun and Earth is at minimum distance.
2. When Moon is farthest from Earth.
3. When Moon is nearest to Earth.
4. When Moon is at 90° to Sun.

The interval between two high tides is approximately _________.

Which of the following constitutes highest coverage of Earth's surface?

Which one of the following is the correct sequence of the four stages of water movement in a hydrological cycle?

Which of the following statements relating to tsunami is/are correct?
As the tsunamis leave the deep water of the open sea and travel towards shallow water:
1. The speed is reduced considerably.
2. They attain enormous height.
3. They appear as a gentle rise and fall of the sea.

Volcanic eruptions do not occur in the ____________.

Which one of the following is responsible for the characteristic reddish colour of Red sea?

On the planet Earth, most of the fresh water exists as ice caps and glaciers. Out of the remaining fresh water, the largest proportion _____________.

With respect to tidal boses a phenomena observed at mouth of river, choose the correct statement.
1. It is a wall of water that moves up certain low lying rivers due to incoming tides.
2. Rivers flowing  into sea, when obstructs the passage of crest of tidal waves, it forms tidal bores.
3. Narrow and low lying coastal rivers with gentle channel gradient is a favorable condition.