Earth-Sun-Moon 1
This process occurs in the core of the sun to produce the energy given off by the sun.
What is nuclear fusion?
The amount of time it takes the earth to rotate once on its axis.
What is 24 hours?
This season occurs in the Northern Hemisphere when the north pole is pointed away from the sun.
What is winter?
This describes when the moon is becoming less lighted.
What is waning?
The lighter, outer part of a shadow.
What is the penumbra?
The sun, moon, and earth all orbit and rotate this direction.
What is counterclockwise?
Small, dark areas on the sun's surface that are cooler than the surroundings.
What are sunspots?
This occurs twice a year when the earth has equal hours of day and night.
What is an equinox?
This name is given to the moon phase when almost all of the moon is lighted.
What is a gibbous moon?
This occurs when the Earth passes between the sun and the moon, casting a shadow onto the moon.
What is a lunar eclipse?
The amount of time it takes the earth to orbit the sun.
What is 365 1/4 days?
This season occurs in the Northern Hemisphere when the north pole is pointed toward the sun.
What is summer?
Moon phase that occurs when the moon is directly between the earth and sun.
What is a new moon?
The cause of Earth's high and low tides.
What is the moon's gravitational pull?
The unit of distance used in the solar system, equal to the distance from the sun to the earth.
What is the astronomical unit?
The visible surface of the sun is called this.
What is the photosphere?
This occurs twice a year, when the earth experiences either the longest or shortest hours of daylight.
What is a solstice?
This name is given to the moon phase when only a small sliver of the moon is lighted.
What is a crescent?
The darker, inner part of a shadow.
What is the umbra?
The reason we only see one side of the moon from Earth.
What is the moon takes the same amount of time to rotate once on its axis as it takes to orbit once around the earth?
The outer part of the sun's atmosphere that can only be seen during a total solar eclipse.
What is the corona?
The two factors that create seasons on Earth.
What is the tilt of Earth's axis and its orbit around the sun?
This describes when the moon is becoming more lighted.
What is waxing?
This occurs when the moon passes between the earth and the sun, casting a shadow onto the earth.
What is a solar eclipse?