Question

Our universe is full of movement controlled by gravity. All planets in our solar system are held in orbit by the Sun's strong gravitational pull. Many phenomena involving Earth are caused by its relationships with the Sun and moon. Think about the connections and movement patterns of the Sun, Earth, and the moon.
Which four statements are true about the phenomena that occur between the Sun, Earth, and moon?
A The position of the moon in relation to the Earth and Sun at a given point determines its phase.
B A lunar eclipse occurs when a full moon passes directly behind Earth and is covered in Earth's shadow.
C On Earth, one day is the time it takes Earth to orbit the Sun one time.
D Tides are caused by the gravitational pulls between the Earth and the Sun.
E The time it takes Earth to revolve once around the Sun is a year.
F A solar eclipse occurs when the moon passes between the Earth and Sun.
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Answer 1

Correct answers: A, B, E, F.

Brief explanations:
- A: Moon phases depend on the relative positions of the Sun, Earth, and Moon.
- B: A lunar eclipse happens at full moon when the Moon moves into Earth's shadow.
- E: One year is the time Earth takes to revolve once around the Sun.
- F: A solar eclipse occurs when the Moon passes between Earth and the Sun.

Why C and D are incorrect:
- C is wrong because one day is Earth’s rotation on its axis (about 24 hours), not one orbit around the Sun.
- D is incomplete/misleading: tides are mainly caused by the Moon’s gravity (the Sun also affects tides but to a lesser extent).