Earth's Motion
This is the term for Earth spinning on its axis, which takes 24 hours.
What is rotation?
This ancient civilization used obelisks and sundials to track the sun's shadow.
Who are the Egyptians?
These two days of the year mark the longest and shortest amounts of daylight.
What are the solstices?
This moon phase occurs when the Earth is directly between the Moon and the Sun.
What is a full moon?
This is the name for the "just right" area around a star where liquid water can exist.
What is the Goldilocks Zone or Habitable Zone
Earth travels around the Sun at this approximate speed in miles per hour.
What is 67,000 mph
We have 60 minutes in an hour because this civilization used a "base-60" system.
Who are the Babylonians?
During this season, your hemisphere is tilted away from the sun, causing light to hit at a shallow angle
What is winter?
This is the term used when the visible lit part of the moon is "growing" each night
What is waxing?
Gravity is determined by these two main factors.
What are mass and distance?
This is why we don't feel the Earth spinning at 1,000 mph.
What is the constant speed/moving with the atmosphere?
This invention in the 1880s forced the world to create standardized Time Zones.
What is the railroad?
We see different constellations throughout the year because of this Earth motion.
What is revolution/orbit?
The Sun always lights up exactly this much of the Moon's total surface.
What is Half?
This moon of Jupiter is a top candidate for finding life because it has a hidden ocean under ice.
What is Europa?
This is the term for Earth's 365-day journey around the Sun.
Revolution or orbit
To the nearest half-degree, this is the angle of Earth's axial tilt.
What is 23.5 degrees?
This famous star appears to stay in the same place all year because it is directly above the North Pole.
What is Polaris/The North Star
This is the phase where the Moon is between the Earth and the Sun, making it look dark to us.
What is the New Moon?
This experimental technology uses the actual pressure of light particles from the Sun to move
What are Solar Sails?