Question

5 what is the main idea of this text? a earths oval - shaped orbit causes the seasons. b earths tilted axis causes the seasons. c the shape of the earth causes the seasons. d earths distance from the sun causes the seasons.

Explanation:

To determine the main idea about what causes Earth's seasons, we analyze each option:

• Option A: Earth's orbit is elliptical (not "oval - shaped" in a simple sense), but the elliptical orbit is not the main cause of seasons. The main cause is the tilt of the axis.
• Option B: Scientifically, the Earth's tilted axis (about 23.5 degrees) as it orbits the Sun leads to different parts of the Earth receiving different amounts of solar energy throughout the year, which causes the seasons. This is the correct scientific explanation.
• Option C: The Earth's shape (nearly spherical) is not the cause of seasons.
• Option D: The Earth's distance from the Sun varies slightly due to its elliptical orbit, but this variation is not the main cause of seasons. The tilt of the axis has a much more significant impact.

Answer:

B. Earth's tilted axis causes the seasons.