Show:
Vocabulary
Earth's Days, Years, and Seasons
Moon Phases, and Eclipses
Earth's Tides
Earth's Times
100
The spinning of a body such as a planet on its axis
What is a rotation
100
the time it takes a planet to complete one full rotation on its axis
What is a day
100
the different appearances of the portion of the moon that reflects sunlight back to earth
What is a lunar phase
100
the daily changes in the level of ocean water that is caused by the gravitational force of the sun and moon across the earth
What is a tide
100
for earth this occurs after a twenty four hour period, a day
What is a rotation
200
When a body completes one full orbit around another body
What is a revolution
200
this occurs when a body traveling around another body in space completes its orbit one time
What is a revolution
200
the force mass exerts that pulls other objects with mass towards itself
What is gravity
200
the difference between the levels of ocean water at high tide and low tide
What is a tidal range
200
this is completed after one year
What is a revolution
300
a time period characterized by a pattern of temperature and other weather trends
What is a season
300
when light shines equally on the Northern and Southern hemispheres
What is an equinox
300
a body that orbits a larger body
What is a satellite
300
the different levels of the tides at different times repeating itself
What is the tide cycle
300
these occur in the beginning of spring and fall
What is an equinox
400
the darkest part of a shadow
What is an umbra
400
a period of time that is characterized by temperature and other weather patterns
What is a season
400
the lighter part of the shadow, that makes a cone around the darker part of a shadow
What is the penumbra
400
They occur when the earth, moon, and the sun form a ninety degree angle, and occur during the first quarter and the third quarter phases of the moon
What are neap tides
400
we see these every night and this cycle lasts twenty eight days
What is a lunar phase
500
a time when light shines equally on both the Northern and Southern hemispheres
What is an equinox
500
a time when an area of sunlight is at a maximum in one hemisphere and at a minimum in another
What is a solstice
500
an event when an object in space casts a shadow onto another object in space
What is an eclipse
500
days that have the largest difference in high tide and low tide, when the earth, moon, and sun form a straight line and the the moon and the sun both add the gravitational effects together to create very large tidal bulges. They take place during new moon, and full moon, so every fourteen days.
What are spring tides
500
these happen when earth casts its shadow onto the moon
What is lunar eclipse