Realms of Earth

What are ores ?

• Rocks that contain iron in higher concentration

• Rocks that contain particular mineral in higher concentration

• Rocks that contain all mineral in higher concentration

• Rocks that contain aluminium in higher concentration

The atmosphere id bound by the _____ .

True or False . About 98% of Lithosphere is composed of elements like oxygen ,silicon , aluminium , iron , calcium , sodium , and magnesium .

• True

• False

_____ provides raw materials needed for us to survive .

• Atmosphere

• Biosphere

• Hydrosphere

• Lithosphere

• All of these

True or False :

Biosphere on the Earth has existed for about 3.5 million years

• True

• False

Which layer of atmosphere extend to around 80 km above the Earth's surface

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

• Exosphere

_____ is an example of strong ocean wave , generally caused due to earthquakes .

True or False . water bodies serve as means of adventure .

• True

• False

Which water currents carry water from the equatorial region to polar regions ?

• Warm currents

• Cold currents

• Water currents

• Water currents

Conglomerate , sandstone , shale and limestone are the examples of which type of rocks ?

• Igneous rocks

• Sedimentary rocks

• Metamorphic rocks