This causes the moon to appear to change shape throughout the month.
What is the moon's orbit around the Earth?
What is one day? (24 hours)
This is the force that keeps planets in orbit around the sun.
What is gravity?
This is responsible for the tides on Earth?
What is the moon's gravitational pull?
This was the first human to walk on the moon.
Who is Neil Armstrong?
This is the moon phase in which a lunar eclipse can occur.
What is a full moon?
What is Earth's rotation on it's axis?
This is the length of time it takes for Earth to complete one full revolution around the sun.
What is about 1 year? (365.25 days)
This is the number of tides you would expect to see if you could spend 24 hours on the beach.
What are two high tides and two low tides? (4 total)
This is the country that the United States raced for in the "Space Race."
What is the Soviet Union? (USSR)
This is the reason we can only see one side of the moon from the Earth.
What is because the moon rotates and revolves at the same speed.
This is the reason we have seasons.
What is Earth's tilt and revolution around the sun?
This is the planet known for it's red color due to the presence of iron oxide, commonly known as rust, in the soil and dust on the planet's surface and can be found next to Earth.
What is Mars?
This would happen to the planets if there was no gravity.
What is everything would float away and planets would not stay in orbit.
This was the main goal of the 1960's space race.
What is to land a human on the moon?
This is what we call the different appearances of the moon from Earth.
What are the moon's phases?
This would happen to our seasons if Earth was not tilted 23.5 degrees on it's axis.
What is there would be no seasons. Weather would be the same year round based on your distance from the equator.
This is the reason we have leap years?
What is because Earth takes about 365.25 days to orbit the sun. The one extra day is added every 4 years.
This tide occurs during a full or new moon and is much more extreme than other times during the lunar cycle.
What is a spring tide.
This is the reason we have time zones on Earth.
What is because Earth rotates and different parts face the sun at different times of the day.
This causes a solar eclipse to occur. (Think about the order of Earth, Moon and Sun during this event.)
What is the moon passing between the sun and the Earth, blocking sunlight.
This is the reason the Northern Hemisphere is cooler in the winter.
What is because it receives less direct sunlight due to it's tilt AWAY from the Earth.
What are liquid water and the right distance from the sun?
This is the reason high tides occur on the side of the Earth facing the moon as well as the side of the Earth away from the moon.
What is because the moon's gravity pulls water toward it on one side of the Earth, and water also bulges on the opposite side due to Earth being in motion.
This is the place where lengths of daylight change the most over the year. Where the hours of sunlight and darkness have the most variety.
What is at the poles?