Question

1. which of the following statements is true?

a. the sun revolves around the earth
b. the moon has its own light source
c. the earth is the largest planet in the solar system
d. the sun is a star

1. what is the main source of heat and light for earth?

a. the moon
b. the stars
c. the milky way
d. the sun

1. how long does it take for the earth to rotate on its axis?

a. 1 day

Explanation:

For Question 8:

• Option a is false: The Earth revolves around the Sun, not the reverse.
• Option b is false: The Moon reflects sunlight, it has no own light source.
• Option c is false: Jupiter is the largest planet in the solar system, not Earth.
• Option d is true: The Sun is a G-type main-sequence star.

For Question 9:

The Sun is the closest star to Earth, and its nuclear fusion reactions produce the vast majority of the heat and light that reaches and sustains life on Earth. Other options do not provide significant heat/light for Earth.

For Question 10:

One full rotation of the Earth on its axis is defined as a solar day, which is approximately 24 hours, commonly referred to as 1 day.

Answer:

1. d. The Sun is a star.
2. d. The Sun
3. a. 1 day