Solar System

What is the Kuiper Belt?

• A region of the solar system beyond Neptune, populated with small icy bodies, including dwarf planets like Pluto.

• A dense area of stars located in the center of the Milky Way galaxy.

• A collection of asteroids located between Mars and Jupiter.

• A theoretical region of space where dark matter is believed to exist.

What is the difference between a planet and a dwarf planet?

• A planet orbits the sun and has cleared its orbit of other debris, while a dwarf planet also orbits the sun but has not cleared its orbit.

• A planet is larger than a dwarf planet, which is always smaller than Earth's moon.

• A planet can have moons, while a dwarf planet cannot have any moons.

• A planet is made of gas, while a dwarf planet is made of solid rock.

What is the significance of the Oort Cloud?

• A theoretical cloud of icy bodies believed to surround the solar system, thought to be the source of long-period comets.

• A dense region of gas and dust located between Mars and Jupiter.

• A collection of asteroids that orbit the Sun in a belt.

• A cluster of stars that forms the outer boundary of the Milky Way.

What is the asteroid belt?

• A region of space located between the orbits of Mars and Jupiter, filled with numerous small rocky bodies called asteroids.

• A collection of planets located between Mars and Jupiter.

• A zone in space where comets are formed.

• An area in the solar system where black holes are found.

What is a comet?

• A large planet made of gas and dust that orbits the sun.

• A small celestial body made of ice, dust, and rocky material that, when passing close to the sun, displays a visible atmosphere or coma and sometimes a tail.

• A star that has exploded and is no longer visible.

• A type of asteroid that is found in the asteroid belt.

What are gas giants?

• Planets that are primarily composed of hydrogen and helium, including Jupiter and Saturn.

• Small rocky planets like Earth and Mars.

• Planets that have a solid surface and are made of metals and silicates.

• Planets that are mostly made of ice and are found in the outer solar system.

What is the former 9th planet that is no longer classified as a planet?

• Pluto

• Eris

• Ceres

• Haumea

What is the main component of the sun?

• Oxygen, which makes up about 21% of its mass.

• Hydrogen, which makes up about 74% of its mass.

• Carbon, which makes up about 2% of its mass.

• Helium, which makes up about 4% of its mass.

What is the largest planet in the solar system?

• Earth

• Jupiter

• Saturn

• Mars

Which planet is the smallest in the solar system?

• Venus

• Earth

• Mercury

• Mars