Earth's structure and Cycles

The uppermost layer of Geosphere is called the

• Lower Mantle

• Inner Core

• Crust

• Rock

Hydrosphere is the water present in the sea and oceans only.

• True

• False

The largest ocean in the world is the

• Indian Ocean

• Atlantic Ocean

• Pacific ocean

• Arctic Ocean

Which is the most abundant gas in the atmosphere?

• Nitrogen

• Oxygen

• Hydrogen

• Argon

"As microscopic organisms in the ocean live and die, their remains accumulate on the ocean floor. Over time, the layers of remains are compacted until they form sedimentary rock" Which two spheres are interacting in the given example?

• Biosphere and Atmosphere

• Biosphere and Geosphere

• Hydrosphere and Geosphere

• Hydrosphere and atmosphere

Flat plate collectors are made of plastics, they convert solar radiations into thermal energy.

• True

• False

If you hold a ball up high and then let go, it will fall. What kind of energy is applied here?

• Solar energy

• Nuclear Energy

• Gravitational energy

• Hydraulic energy

Which gas is produced when wood and fossil fuels are burnt?

• Oxygen

• Carbon dioxide

• Hydrogen

• Helium