Planets
Which planet do we live on?
Earth
Is the Sun a planet or a star?
A star
What is a dwarf planet? Name one.
A small planet, e.g., Pluto
What is Earth's spinning movement called?
(Rotation)
Which planet has beautiful rings?
Saturn
Why is the Sun important for life on Earth?
It provides heat and light.
What are asteroids?
Rocky objects that orbit the Sun.
What is Earth's journey around the Sun called?
(Revolution)
Which planet is closest to the Sun?
Mercury
What gas does the Sun mainly contain?
Hydrogen
What is the difference between a planet and a star?
(Stars produce their own light; planets do not.)
Why do we have leap years?
(Because Earth takes about 365¼ days to orbit the Sun.)
Which planet is known as the Blue Planet?
Earth
Why does the Sun look bigger than other stars?
Because it is much closer to Earth.
What is the asteroid belt?
(A region between Mars and Jupiter where many asteroids orbit.)
How long does Earth take to complete one rotation?
(24 hours)
Arrange these planets from the Sun: Earth, Mercury, Mars, Venus.
Mercury → Venus → Earth → Mars
Explain why the Sun is called the center of the Solar System.
Its gravity keeps all the planets in orbit around it.
Compare an asteroid, a dwarf planet, and a satellite.
(Asteroid: rocky object; Dwarf planet: small planet; Satellite: orbits a planet.)
Explain how rotation and revolution together affect life on Earth.
(Rotation causes day and night; revolution causes the year and seasons.)