B. limestone
C. sandstone
D. rock gypsum
The correct answer is - The tilt of the Earth exposes different ares to direct sunlight as the Earth orbits the Sun.
One of the biggest reasons why there's seasons on the Earth, is the Earth's tilt. In one part of the year, the Northern Hemisphere is the one that is more exposed to the Sun, and that is because of the tilting of the Earth, while the South Hemisphere in the same time is tilted away from the Sun. Because of this, the Northern Hemisphere experiences warmer weather, and it is summer, while in the Southern Hemisphere that has much less sunlight is much colder, and it is winter. This also goes the other way around in the other part of the year, where the Southern Hemisphere is tilted towards the Sun, while the Northern Hemisphere is tilted away from it.
b. The Empty Quarter
c. Iranian Plateau
d. Strait of Hormuz
The correct answer is - d. Strait of Hormuz.
The Strait of Hormuz is located between the territories of Oman and the United Arab Emirates from one side, and Iran on the other side. It lies between the water bodies of the Persian Gulf and Gulf of Oman.
The strait itself is on the boundary between the Eurasian tectonic plate, and the Arabian tectonic plate. They form a convergent boundary. Since the Arabian plate is pushing against the Eurasian plate, there's constant stress deep into the ground, stress that causes lot of cracks to appear inside the crust. That results in very common earthquake occurrences.
The answer is The unsorted sand and rock is the least porous. The porousness of a solid material is dependent on the size of holes within it. This can be tested by how quickly, the material can pass a liquid through it. The bigger the holes, the higher the porousness, In this case, the unsorted sand and rock have the smallest holes between its particles.
Large pebbles and boulders materials is the least porous. Correct option is D.
Large pebbles and boulders are the least porous among the given options. Porosity refers to the percentage of void space or openings (pores) within a material that can hold fluids like water, air, or other substances. It is a measure of how much empty space exists within the material.
In the given options:
a. loosely packed gravel: Gravel generally has larger particles and may have relatively higher porosity compared to other options.
b. sorted sand and rock: Sorted sand and rock may have some porosity depending on the grain size and how well-packed the particles are, but it is likely to be less porous than loosely packed gravel.
c. unsorted sand and rock: Unsorted sand and rock may have varying porosity depending on the mixture, but it is likely to be less porous than loosely packed gravel.
d. large pebbles and boulders: Large pebbles and boulders have minimal pore space compared to the other options. The particles are relatively large and leave less room for open space between them, resulting in lower porosity.
So, the material with the least porosity among the given options is "d. large pebbles and boulders."
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Complete question is:
Which of the following materials is the least porous?
a. loosely packed gravel
b. sorted sand and rock
c. unsorted sand and rock
d. large pebbles and boulders
C. Depopulation
D. Ethnic diversity
c. U-shaped valleys.
b. fossils.
d. rift valleys.