Planets
How many planets are in the solar system?
8
What is the imaginary line that runs vertically through the center of the Earth?
Earth's Axis
How many stars are in our solar system?
1- the sun
What is the Moon primarily made of?
Rock and dust
How long does it take Earth to revolve around the sun?
365 days (1year)
What keeps the Earth in its orbit?
Gravity
What is the area of rocks, dust, and ice that separate the inner and outer planets?
Asteroid Belt
If it's daytime on one side of the planet, what is the other side experiencing?
Nighttime
How does our star compare to other stars in the galaxy?
Why is the moon visible at night?
It reflects light from the sun
What is an ellipse?
An ellipse is a circle that is flattened and slightly stretched out into an oval shape.
What are the four outer planets known as?
Gas Giants
Why do planets have different length years?
The further a planet gets from the sun, the longer their orbit around the sun.
How long does it take Earth to spin once on its axis?
25 1/4 days
What are constellations made of?
Stars
How many moon phases are there?
8
How many degrees is Earth's axis tilted?
Earth's axis is tilted 23.5 degrees compared to its orbital path.
What are the 4 inner planets known as?
Terrestrial Planets
Why is Earth able to support life? What zone of Earth do humans live in?
Habitable Zone
What causes the pattern of day and night on Earth?
Earth rotates on its axis
Why does the sun appear larger than stars that we see at night?
The sun is closer to Earth than other stars, making the sun appear larger.
What side of the moon is facing the Earth?
Near side- it doesn't change
Where does the sun rise and set?
The Sun rises in the east and sets in the west.
Why do we see different constellations during different times of the year?
The Earth is orbiting the sun and the constellations stay in the same spot
Name the 4 inner planets and 4 outer planets.
Inner: Mercury, Venus, Earth, Mars
Outer: Jupiter, Saturn, Uranus, Neptune
When is the sun highest in the sky?
12:00pm (Noon)
What do the different colors of stars represent?
The temperature of the star
Name a moon phase.
Answers will vary
What causes Earth to experience seasons?
Earth experiences seasons because its axis is tilted as it orbits in a circle around the Sun.
What is one difference between a star and a planet?
Answers will vary.