Planets
How many planets does our solar system have?
8
What is the name of the force that pulls all objects towards Earth?
Gravity
What is the spinning of Earth on its axis called?
Rotation
True or False: All stars are the same distance from Earth.
False
One rotation of Earth takes how long?
1 day
Mercury
True or False: Gravity acts between all objects that have mass.
True
What is the circular movement of the Earth around the sun called?
Revolution
True or False: The sun is the biggest and brightest star compared to all the other stars.
False. It only looks the biggest and brightest because it is the closest.
One revolution of the Earth takes how long?
1 year
This planet is the farthest from the sun.
Neptune
True or False: Up is the same direction no matter where you are on Earth.
What is the imaginary line that the Earth spins on called?
Axis
The brightness of a star is determined by its _______________ from Earth.
distance
A star, the planets and everything else that surrounds it is called what?
Solar System
What is an object that is smaller than a planet, orbits the sun, and is too small to clear it's orbit of space junk?
Dwarf Planet
Explain why penguins on the south pole don't fall off of Earth.
Because gravity pulls all objects towards Earth, no matter where they are.
What is the path that the Earth travels on around the sun called?
Orbit
How many stars are in our solar system?
1. The sun
What motion of Earth causes day and night?
Rotation
Which planet would have the longest year?
Neptune because it has the largest orbit. (About 60,182 Earth days)
True or False: Gravity is the reason that the Earth and all other planets orbit around the sun.
True. It is because of the suns gravity that all the planets orbit around the sun.
What is a cluster of stars grouped in a pattern and given a name?
Constellation
Why can't we see any stars during the day?
Because the sun is so close, the brightness from the sun outshines the light of the other stars that are behind it.
Why do we see different constellations during the year?
Revolution. As Earth revolves, we change the direction into space we are facing, which changes the stars we see at night during the year.