LET'S BE CLEAR
This is a spherical object that orbits the Sun.
What is a Dwarf Planet?
These are planets closest to the Sun, and are made of rock and metal and have solid outer layers.
What are the terrestrial planets?
This is the force that every object exerts on all other objects because of their masses.
What is gravity?
The strength of a planet's gravity depends on this.
What is the planet's mass?
The solar system formed from a cloud of gas, ice, and dust.
What is a nebula?
This is usually called a shooting star. But in all actuality, it is a small piece of material that burns up as it enters Earth's atmosphere.
What is a meteor?
Earth was once thought to be the center of our solar system.
What is geocentric?
This is the smallest planet and the planet closest to the Sun.
What is Mercury?
This is the third planet from the sun, it has a solid inner core surrounded by a liquid outer core.
What is Earth?
When a planet's gravity is strong enough to hold gases close to its surface.
What is when a planet has an atmosphere?
This is made of gas, dust, and ice and moves around the Sun in an oval-shaped orbit.
What is a comet?
This is the time it takes an object to complete one rotation.
What is the period of rotation?
This is a large group of stars, space dust, and gases that are held together by gravity.
What is a galaxy?
This occurs when a planet's atmosphere traps solar energy and causes the surface temperature to increase.
What is the Greenhouse Effect?
The time it takes an object to travel once around the Sun.
What is the period of revolution?
This is millions of small rocky objects that orbit the Sun in the asteroid belt between the orbits of Mars and Jupiter.
What are asteroids?
An astronomical unit (AU) is the average distance,
What is from Earth to the Sun?
The graph that plots the relationship between a star's average surface temperatures and its brightness.
What is the Hertzsprung-Russell (HR) Diagram?
List the planets that are made mainly of ice and gases such as hydrogen and helium; they are much larger than Earth and are sometimes called gas giants.
What are Jupiter, Saturn, Uranus, and Neptune?
The brightness of a star as it appears from the Earth.
What is the apparent magnitude?
The region of the solar system in which asteroids are concentrated; it is located between the inner and outer planets.
What is the asteroid belt?
This model of the solar system that places the sun at its center.
What is the heliocentric model?
The outer planet with the most complex ring system in the solar system.
What is Saturn?
Unlike Mercury and Venus, Earth has this.
What is moon?
A massive ball of hot gases that gives off its own light.
What is a star?