What is a solar system? Page 540
It is made up of a star and the planet and other space objects that revolve around it.
List the inner planets
Inner planets: Mercury, Venus, Earth, Mars.
List five characteristics of inner planets
Characteristics: 1.Closest to the sun, 2.Very dense and rocky, 3.Few moons, 4.Revolution times are short, 5. Small diameters
List the outer planets
Jupiter, Saturn, Uranus, and Neptune
List five characteristics of outer planets
Characteristics: 1. Farthest planets form the sun, 2. gas giant, 3. huge, 4. Cores are very small, 5. Many moons and ring systems
What is a planet?
It is a large, round body that revolves around a star.
What is a dwarf planet?
It is nearly round bodies whose orbits cross the orbits of other bodies.
What is an asteroid?
It is a rock and iron object that orbit the sun.
What is meteoroids?
It is a piece of rock that break off of asteroids and travel through space.
What is a meteor?
It is when meteoroids burn up in Earth's atmosphere, causing a streak of light called a METEOR.
What is a meteorites?
Meteoroids that reach Earth's surface.
What is astronomy? Page 562
It is the study of objects in space and their characteristics.
What is an astronomer? Page 562
It is scientist who study space and everything in it.
How are stars classified? Page 563
Stars are classified by their color, temperature, brightness, brightness, and size.
What is universe? Page 564
It is everything that exists.
________type of galaxy that looks like a pinwheel-like groups of young stars, gas, and dust and a central bulge made of older stars.
Spiral Galaxies
