An imaginary line that Earth rotates around.
What is an axis.
Making a complete spin on an axis.
What is a rotation.
How far from one point to another.
What is distance.
When the whole surface of the Moon is visible to us on Earth.
What is a full moon.
Information that supports an idea.
What is evidence.
The third planet from the Sun and the only planet in the solar system where life exists.
What is Earth.
The southernmost point on Earth, as determined by the planet's rotation.
What is the south pole.
To use the senses to examine or inspect.
When the side of the Moon facing us on Earth is dark.
What is a new moon.
A push or a pull that causes an object to move, stop, or change direction.
What is a force.
A natural satellite that orbits a planet.
What is a moon.
The 24 hour cycle for Earth to make one complete rotation.
What is a day.
A ball of gas in space that produces its own light and heat.
What is a star.
Distinct periods of the year marked by changes in weather, daylight hours, and plant life, occurring due to Earth's tilt as it orbits the sun.
What are seasons.
The force that causes objects with mass to attract each other.
What is gravity.
The northernmost point on Earth, as determined by the planet's rotation.
What is the north pole.
Why a shadow changes throughout the day on Earth.
What is rotation.
The star at the center of the solar system that supplies heat and light to Earth.
What is the Sun.
The illuminated portion of the Moon visible from Earth.
What are moon phases.
Any of the large celestial bodies that revolve around the Sun in the solar system.
What are planets.
The path one object takes as it revolves around another object in space.
What is an orbit.
The part of the Earth where the Sun does not shine or a dark period on Earth.
What is nighttime.
The brightness of a star perceived by an observer on Earth.
What is apparent brightness.
A set of stars that makes a pattern when viewed in relation to each other.
What is a constellation.
Direction of Earth's gravitational pull.
What is downward.