Gravity
Phases of the Moon
Rotation and Revolution
Tides
Space Exploration
100

What is the only planet that contains gravity?

What is Earth?

100

The lunar cycle is approximately how many days? 

What is 29 days?

100

Earth ______ on an imaginary line called an axis.

What is Rotates?

100

What is the reason for ocean tides?

What is the moon's gravitational pull ?

100

Who was the first human to step onto the moon?

What is Neil Armstrong?

200

What is gravity?

What is the force that makes things fall-force of attraction between two bodies that have mass.

200

There are _______ phases of the moon.

What is eight?

200

Earth rotates every _____ hours.

What is 24 hours? 
200

What is geometric arrangement occurs during a solar eclipse?

what is SUN + Moon + Earth ?

or 

What is the moon in between the sun and earth?

200

What space agency launched the Hubble Space Telescope in 1990?

What is NASA?

300

What forces keeps planets in orbit around the sun?

What is gravity?

300

Why do observers on Earth see changing Moon phases throughout the month?

What is Earth moves through different viewing angles of the Moon's constantly lit half?
300

Earth ______ around the sun.

What is Revolves?

300

How many high tides and low tides does a specific coastal location on Earth typically experience every 24 hours?

What is two high tides and two low tides?

300

What is the main function of a rover in space exploration?

what is Analyze the surface of moons and planets?

400

What factor does the force of gravity depend on?

What is mass or distance?

400

Which moon phases occurs when the moon is positioned directly between Earth and the Sun?

What is the New Moon?

400

Earth's ________ and ________ around the sun cause seasons.

What is Tilt and revolution?

400

Which combination of Moon phases produces a spring tide?

What is New Moon and Full Moon?

400

What does NASA stand for?

What is National Aeronautics and Space Administration ?

500

How do mass and distance affect the strength of gravitational force between two objest?

Greater mass increases gravity; greater distance decreases gravity

500

Which combination of Moon Phases produces a spring tide?

What is New Moon and Full Moon?

500

What alignment defines an equinox?

what is Neither hemisphere is tilted towards or away from the sun?

500

Why do neap tides result in the weakest overall tidal range?

What is the sun and moon are working against each other? 

or 

What is the sun and moon pulling at a right angle?

500

Which space exploration tool is specifically designed to fly past or enter the atmosphere of a body without entering permanent orbit?  

What is Space Probe?