Day and Night
Seeing
Observing!
What is out there?
Planets
In the sky
100
How long does it take for the Earth to rotate on its axis?
Around 24 hours
100
This is an instrument that uses lenses and mirrors to collect light and help us see objects far away
What is a telescope?
100
What did people used to think was at the center of the solar system? (500 years ago)
Earth
100
An irregularly shaped rock orbiting the Sun
What is an asteroid?
100
Which planet in our solar system has the most gravity and why?
Jupiter - has the most mass. More mass = more gravitational force
100
This happens when the Moon and Earth move into a straight line with the sun
What is a solar eclipse?
200
What is the angle of the Earth's axis
23.5 degrees
200
The direction that the Earth spins if looking down at the North Pole
counterclockwise
200
Earth has one natural satellite - what is it
the moon
200
This is a mass of dust and ice that is surrounded by gases, water vapor, and rocky dust particles.
What is a comet?
200
What force keeps the planets orbiting the sun?
Gravity
200
This happens when the Earth moves between the moon and the sun and blocks the sun's light from reaching the moon.
What is a lunar eclipse?
300
How long does it take the Earth to do a full orbit (revolution) around the Sun?
What is 365 days or one year.
300
The direction you look to see the sun "rise"
East
300
What is the sun centered model called?
heliocentric model
300
These are meteors that reach the Earth's surface.
What are meteorites?
300
What do the four outer planets have in common? (farthest from the sun)
Gas giants, colder and darker as they are further from the sun. Also bigger.
300
tides happen because
the gravity of the moon pulls the water towards it
400
What phase of the moon is shown here? 
New Moon
400
The lunar phase when the moon is farthest from the sun
full moon
400
Why can we only see distant stars at night
our star (the sun) makes too much background light for us to see the distant light of faraway stars.
400
Which comet is seen from earth every 75-76 years?
What is Haley's comment?
400
What do the four planets closest to the sun have in common?
rocky planets (solid - you could land on them)
400
This explains why the Earth experiences changing seasons.
The Earth's axis is tilted and depending on where in the yearly revolution it is, either the Northern or Southern Hemisphere is getting more daily sun
500
This is what you call the changes of the moon's appearance as it orbits Earth
Lunar Phases
500
These are 4 things you can see if you look at the night sky.
Moon, Stars, Planets, Satellites (sometimes comets and meteors - aka "shooting stars")
500
This person invented the telescope
Who is Galileo?
500
What is the name for the path that a planet takes around the Sun?
Orbit
500
Name the 8 planets in order starting closest to the sun
My Very Energetic Mother Just Served Us Nachos
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
500
This is why the moon looks different each night of the month.
The reflection from the sun is different each night depending on where the moon is on its orbit.