Axis - An imaginary line about which an object spins. Day - The amount of time it takes for a planet to rotate on its axis. Year - The amount of time it takes for a planet to revolve around its sun. Apparent - The description of how the motion of an object appears to an observer. Seasons - These patterns occur as a result of the tilt of the Earth and the Earth’s revolution around the Sun. Summer - The season that occurs when a hemisphere is tilted towards the Sun. Winter - The season that occurs when a hemisphere is tilted away from the Sun. Summer solstice - The longest day of summer. Winter solstice - The shortest day of winter. Equinox - This occurs twice a year when day and night are the same length. Satellite - An object that orbits around a larger object. Rotation - When an object spins on its own axis. Revolution - When an object moves around another object. Crescent - The phase of the moon when only a thin section of the moon’s illuminated surface is visible. Gibbous - The phase of the moon when most of the moon’s illuminated surface is visible. Full - The phase of the moon when all of the moon’s illuminated surface is visible. New - The phase of the moon when none of the moon’s illuminated surface is visible. Quarter - The phase of the moon when half of the moon’s illuminated surface is visible. Waxing - When more of the moon’s illuminated surface is becoming visible. Waning - When less of the moon’s illuminated surface is becoming visible. Tides - These occur as a result of the moon’s gravity. They occur approximately ever 12.5 hours. Spring - These tidal variations are larger and occur at full moon and new moon. Neap - Smaller tidal variations that occur when the Sun and Moon are at right angles when viewed from the Earth. Solar eclipse - When the shadow of the Moon passes across the surface of the Earth. Lunar eclipse - When the shadow of the Earth passes across the Moon. Total - The type of eclipse in which the Sun or Moon is completely obscured. Partial - The type of eclipse in which only part of the Sun or Moon is obscured. Umbra - The Latin word for ‘shadow’. Penumbra - The term for partial shadow. Planet - An object that is in orbit around a star (or the remains of a star), is nearly spherical in shape, and has cleared its orbit of other debris.
Y11 astronomy (earth, moon, sun, eclipses)
Axis - An imaginary line about which an object spins.
Day - The amount of time it takes for a planet to rotate on its axis.
Year - The amount of time it takes for a planet to revolve around its sun.
Apparent - The description of how the motion of an object appears to an observer.
Seasons - These patterns occur as a result of the tilt of the Earth and the Earth’s revolution around the Sun.
Summer - The season that occurs when a hemisphere is tilted towards the Sun.
Winter - The season that occurs when a hemisphere is tilted away from the Sun.
Summer solstice - The longest day of summer.
Winter solstice - The shortest day of winter.
Equinox - This occurs twice a year when day and night are the same length.
Satellite - An object that orbits around a larger object.
Rotation - When an object spins on its own axis.
Revolution - When an object moves around another object.
Crescent - The phase of the moon when only a thin section of the moon’s illuminated surface is visible.
Gibbous - The phase of the moon when most of the moon’s illuminated surface is visible.
Full - The phase of the moon when all of the moon’s illuminated surface is visible.
New - The phase of the moon when none of the moon’s illuminated surface is visible.
Quarter - The phase of the moon when half of the moon’s illuminated surface is visible.
Waxing - When more of the moon’s illuminated surface is becoming visible.
Waning - When less of the moon’s illuminated surface is becoming visible.
Tides - These occur as a result of the moon’s gravity. They occur approximately ever 12.5 hours.
Spring - These tidal variations are larger and occur at full moon and new moon.
Neap - Smaller tidal variations that occur when the Sun and Moon are at right angles when viewed from the Earth.
Solar eclipse - When the shadow of the Moon passes across the surface of the Earth.
Lunar eclipse - When the shadow of the Earth passes across the Moon.
Total - The type of eclipse in which the Sun or Moon is completely obscured.
Partial - The type of eclipse in which only part of the Sun or Moon is obscured.
Umbra - The Latin word for ‘shadow’.
Penumbra - The term for partial shadow.
Planet - An object that is in orbit around a star (or the remains of a star), is nearly spherical in shape, and has cleared its orbit of other debris.