Answer:
Asteroids- Asteroids are rocky objects primarily found in the asteroid belt. These objects are sometimes called minor planets or planetoids.
Meteors- They come from the asteroid belt, Some are fragments from bodies such as Mars or our moon, that have been thrown into space by an impact.
Comets- Comets orbit the sun. Occasionally a comet streaks through the inner solar system; some do so regularly, some only once every few centuries.
Explanation:
Answer:
Option (C)
Explanation:
The continental drift theory was introduced by Alfred Wegener. He said that the continents moved over the vast ocean surface from one place to another.
He contributed many pieces of evidences in support f this theory, which includes the founding of similar fossil assemblages, similar rocks types in the distant continents, matching of the continental boundaries, but he was not able to explain the main mechanism behind the continental motion.
Due to this, this theory was not accepted by the other scientists and he was criticized by them.
Later, this theory was modified into the Plate tectonic theory which was successful in explaining the mechanism behind the continental motion i.e the formation of convection current in mantle that drives the plates movement.
Thus, the correct answer is option (C).
Answer:
1.
Explanation:
All parallel circles from the equator to the poles are known as parallels of latitudes. The lines of reference running from the North Pole to the South Pole are known as meridians of longitude.
Answer:
The largest lake in the western us is the great salt lake.
Explanation:
Answer:
Options (A), (D) and (E)
Explanation:
Mass wasting refers to the downward motion of sediments and rock particles along the slope of the area under the influence of gravity.
There are different types of mass wasting processes such as mudflow, slump, rockfall, debris flow and many more. This classification of mass wasting types are based on the 3 criteria namely-
- the type of motion of the materials
- the type of materials present in the flow
- the rate of movement of these sediments and materials.
For example, in the case of rockfall, the materials present in it are large fragments of rocks, the motion is vertical or nearly vertical and the particles fall at a rate of 10s of m/sec.
Thus, the correct answers are options (A), (D) and (E).
