EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The factor that contributes most of the seasonal temperature changes during one year is the changing
A
speed at which the Earth travels in its orbit around the Sun
B
angle at which the Sun’s rays strike the Earth’s surface
C
distance between the Earth and the Sun
D
energy given off by the Sun
Explanation: 

Detailed explanation-1: -Earth’s tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun’s most direct rays. So, when the North Pole tilts toward the Sun, it’s summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it’s winter in the Northern Hemisphere.

Detailed explanation-2: -The earth’s spin axis is tilted with respect to its orbital plane. This is what causes the seasons. When the earth’s axis points towards the sun, it is summer for that hemisphere. When the earth’s axis points away, winter can be expected.

Detailed explanation-3: -At higher latitudes, the angle that the sun’s rays hit Earth is lower due to Earth’s curved shape. This causes the sun’s energy to be spread over a larger surface area, which results in lower overall temperatures north and south of the equator.

Detailed explanation-4: -The Earth’s shape is spherical. This causes the Sun’s rays to strike the Earth’s surface at different angles, creating variances in temperatures on Earth. The equator receives the most direct sunlightbecause sunlight arrives at a perpendicular (90 degree) angle to the Earth.

Detailed explanation-5: -Sunlight that strikes the Earth directly heats the surface more than sunlight that strikes at an angle. The steeper the angle, the less solar radiation can be absorbed. Over millions of years, changes in the location of land and oceans can alter how much light is absorbed or reflected by the surface of the Earth.

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