Planets
Which planet is known as the "Red planet?"
Mars
What is at the center of our solar system?
The sun.
Name the 2 factors that affect the strength of an object's gravitational pull:
1. mass
2. distance
What is a nebula made of?
Dust and gases.
Milky way.
What is the largest planet in our solar system?
Jupiter
What do you call the objects that orbit the sun?
Planets
If the Sun's gravity were to suddenly disappear, what would happen to the orbital paths of the planets?
The planets wouldn't be pulled in an elliptical orbit. They would fly off into space in a straight line.
What force causes binds solar nebulae together and causes them to spin?
gravity
How many galaxies our galaxy cluster?
30
How many planets are currently recognized in our solar system?
Eight Planets
Pluto used to be considered a planet, but now it is considered this.
What is a dwarf planet?
Susie creates a model of the Sun's gravitational pull by attaching a jump rope to a basketball. She then swings the jump rope around her head in a circle. Name what each part of the model represents. Susie: ______, jump rope: _______, basketball: _________.
Susie: The Sun
jump rope: gravity
basketball: a planet (Earth, etc.)
What forms at the center of a solar nebula as the result of nuclear fusion?
A star
How many different classifications of galaxies are there?
3
Which planet is known for its prominent rings?
Saturn
Name three nonplanetary celestial bodies.
Stars, Dwarf planets, asteroids, meters, comets
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
What happens to the shape of a solar nebula as gravity causes it to spin?
It flattens into a disk shape.
What is the missing type of galaxy, spiral, irregular, ___.
What is the the 7th planet in our solar system?
Uranus
All solar systems form around what kind of object?
A star or stars
Earth has one orbiting moon. Jupiter has 79 confirmed moons. Infer why Earth has fewer moons than Jupiter.
Jupiter has a much larger mass. This means it has a greater gravitational pull and can pull more moons into it's orbit.
The only objects that are easy to locate in space are stars, since they are the only objects to give off light. Using what you know about solar systems, stars, and gravitational pull, tell me how scientists could use this knowledge to help locate planets outside our solar system.
Scientists know that planets form around stars and orbit around stars. If they can locate a star, they can look around it for orbiting planets.
What kind of galaxy shape is the milky way?
Spiral.