Exploring Our Solar System

What is in our Solar System?

• The Solar System includes only the Sun and its light.

• The Solar System contains the Sun, eight planets, moons, dwarf planets, asteroids, comets, and meteoroids.

• The Solar System is made up of stars and galaxies.

• The Solar System contains only the Earth and the Moon.

What is a star?

• A star is a solid rock formation in space.

• A star is a massive cloud of dust and gas that does not emit light.

• A star is a luminous sphere of plasma held together by gravity, undergoing nuclear fusion.

• A star is a type of planet that orbits a sun.

What is an orbit?

• An orbit is the gravitationally curved trajectory of an object around a point in space.

• The speed at which an object travels in space.

• A path taken by a comet through the atmosphere.

• A circular motion of an object on a flat surface.

What is in the inner Solar System?

• Pluto, Eris, Haumea, Makemake

• Jupiter, Saturn, Uranus, Neptune

• The Moon, Phobos, Deimos, Titan

• The Sun, Mercury, Venus, Earth, and Mars

What is in the outer Solar System?

• The Asteroid Belt

• Jupiter, Saturn, Uranus and Neptune

• The Andromeda Galaxy

• Mercury and Venus

What is a dwarf planet?

• A dwarf planet is a large moon that orbits a gas giant.

• A dwarf planet is a celestial body that orbits the Sun, is spherical, has not cleared its orbit, and is not a moon.

• A dwarf planet is a star that has not ignited nuclear fusion.

• A dwarf planet is a comet that travels through the solar system.

Is Pluto a planet?

• No, Pluto is not considered a planet.

• Yes, Pluto is a planet.

• Pluto was reclassified as a planet in 2020.

• Pluto is a dwarf planet but still a planet.

What instruments can we use to study space?

• Computers

• Underwater cameras

• Microphones

• Telescopes, satellites, space probes, and spectrometers.

How many planets are in our Solar System?

• 9

• 10

• 8

• 7

What is the closest planet to the Sun?

• Venus

• Mercury

• Mars

• Earth