CORE120- Review

A closely passing star or the blast of a nearby supernova explosion drew out a filament of solar material that condensed to form the planets. What theory/hypothesis does this statement best describe?

• Protoplanet Hypothesis

• Collision Theory

• Nebular Hypothesis

• None of the Above

It is an imaginary path where the planets travel to revolve around the sun.

• Milky way

• Asteroid belt

• Oort cloud

• Elliptical Orbits

Pluto downgraded as a dwarf planet. Which among the following categories set by the IAU (International Astronomical Union) Pluto does not qualify?

• It has “cleared the neighborhood” around its orbit.

• It has sufficient mass to assume hydrostatic equilibrium (a nearly round shape).

• It is in orbit around the Sun.

• None of the above. Pluto is still considered a planet.

This planet is considered to be Earth’s twin planet.

• Mercury

• Mars

• Venus

• Pluto

It is the layer of the atmosphere where all weather occurs.

• Mesosphere

• Lithosphere

• Troposphere

• Stratosphere

What is the earth subsystem that covers the whole ecosystem and life forms?

• Atmosphere

• Biosphere

• Geosphere

• Hydrosphere

Which among the following pictures shows a cleavage in the physical property of a mineral?

• 
• 
• 
• 

Which among the following minerals are under the category of Native elements?

• Calcite

• Gold

• Feldspar

• Halite

This refers to the measure of the resistance of a mineral to scratching or abrasion.

• streak

• hardness

• fracture

• cleavage

This type of rock is formed when magma or lava cools or harden.

• sedimentary rock

• igneous rock

• metamorphic rock

• none of the above