Ancient astronomers studied the sun and the moon. Which look like they travel across the sky and Earth is moving very still. But actually, the sun and move only look like they are moving everyday only because Earth is rotating on its axis.
What causes the cycle of Earth's four main seasons?
Earth's four main seasons on Earth are caused by the tilt of Earth's axis as it revolves around the sun.
Gravity and Motion:
What determines the strength of the force of gravity between two objects?
The moon determines the strength of the force of gravity between two objects.
What two factors combine to keep the moon and Earth in orbit?
The two factors that combine to keep the moon and Earth in orbit are inertia and gravity.
Phases, Eclipses, and Tides
What causes the phases of the moon?
They are caused by when the sun reflects light onto the moon.
What are the solar and lunar eclipses?
The solar eclipse is a blocking of sunlight to Earth and that occurs when the moon is in between the Sun and Earth. A lunar eclipse is when sunlight is blocked by the moon and occurs when Earth is in between the Sun and the moon.
What causes the tides?
The tides are caused by differences in how much the moon's gravity pulls on different parts on Earth.
What features are found on the moon's surface?
Some of the features that are found on the moon's surface are craters, highlands, and maria.
What are some characteristics of the moon?
Some characteristics of the moon is that the moon is dry and airless. The moon is small and has a large variations in its surface temperature.
How did the moon form?
Scientists aren't sure how the moon was formed. One of there theories is that a planet-sized object collided with Earth to form the moon.