Question

1. how many stars are in the milky way galaxy and what
2. what are the inner planets and describe their relative size
3. what are the outer planets and describe their relative size
4. where is the main asteroid belt located?
5. what is the largest object in our solar system?
6. what causes the seasons?
7. what is the force that keeps the planets moving around
8. what causes the tides on earth?

what lunar phase must the moon have during a lunar

Explanation:

1. For question 18: The Sun contains over 99.8% of the total mass in our Solar System, making it the largest object.
2. For question 20: Gravitational pull from the Sun provides the centripetal force that keeps planets in their orbital paths around it.
3. For question 21: Tides are caused by the gravitational pull of the Moon (primary cause) and the Sun on Earth's oceans, combined with Earth's rotation.
4. For question 15: The inner planets are Mercury, Venus, Earth, and Mars. They are small, rocky terrestrial planets, with sizes increasing from Mercury to Earth, then Mars being slightly smaller than Earth.
5. For question 16: The outer planets are Jupiter, Saturn, Uranus, and Neptune. They are large gas/ice giants, with Jupiter being the largest, followed by Saturn, Uranus, then Neptune.
6. For question 17: The Main Asteroid Belt is located in the gap between the orbits of Mars and Jupiter.
7. For question 14: The Milky Way Galaxy has an estimated 100 to 400 billion stars, and it is a barred spiral galaxy.
8. For question 19: Earth's 23.5-degree axial tilt, combined with its orbit around the Sun, causes varying amounts of sunlight to reach different parts of the planet throughout the year, creating seasons.

Answer:

1. The Milky Way has 100–400 billion stars; it is a barred spiral galaxy.
2. Inner planets: Mercury, Venus, Earth, Mars. They are small rocky worlds, sized from smallest (Mercury) to largest (Earth), with Mars slightly smaller than Earth.
3. Outer planets: Jupiter, Saturn, Uranus, Neptune. They are large gas/ice giants, sized from largest (Jupiter) to smallest (Neptune).
4. The Main Asteroid Belt is between Mars and Jupiter.
5. The Sun
6. Earth's 23.5° axial tilt and orbital motion around the Sun cause seasons.
7. The Sun's gravitational force (combined with the planets' inertia) keeps planets orbiting it.
8. The gravitational pull of the Moon (primary) and Sun on Earth's oceans, plus Earth's rotation, causes tides.