1. The majority of the accessible drinking water on our planet comes from: a. Oc
ID: 111057 • Letter: 1
Question
1. The majority of the accessible drinking water on our planet comes from:
a. Ocean b. Glaciers c. Streams d. Groundwater
2. Although the waters are rising in the ocean today and are submerging our coastlines, there are areas of coastline that are uplifting faster than the sea is rising. These coastlines are called:
a. Emergent coastlines b. Estuary coastlines c. Submergent coastlines d. Glacier coastlines
3. Asteroids orbit the:
a. Earth b. Moon c. Sun d. Asteroids do not orbit any object
4. Which meteorite has a composition that’s pure iron-nickel?
a. Achondrite. b. Chondrite c. Strony-iron meteorite d. iron meteorite
5. A meteorite with a composition similar to Earth’s mantle is called
a. Iron meteorite b. Stony-iron meteorite c. Tektite d. Chondrite e. Achondrite
Explanation / Answer
1 answer - d
among all the water present on the earth only 2.5% is available as fresh water. and most of this fresh water is land locked as glaciers and ice. only few of this fresh water is availble for drinking purpose.
among all the drinking water available ground water contrbutes the maximum amount of water. lakes and rivers comes next in the order
2 answer - a
emergent coastlines are those which are resulted either by the uplifting of the land surface or by the fall of sea level.
while submergent coastlines are those which are formed either by the subsidence of land or by the rapid rise of sea level.
3 answer - c
most of the asteroids in our solar system are present in asteroid belt that is present between the mars and jupiter. and all these asteroids orbits the sun.
4 answer - d
iron meteorite are those which are entirely or mostly composed of two metlas iron and nickel. kamacite and taenite are the two major alloys present in this iron meteorites.
5 answer - d
chondrites are the stony meteorites which consists silicate minerals like pyroxenes and olivines. the earths mantlle is also rich in minerals like olivine and peridotite.
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