Ch 20 Flashcards
What causes tides
The gravitational pull of the sun and moon
What causes phases of the moon to change
The moons revolution around the earth
What causes the seasons
The Earth’s tilt around its axis
List moon phases in sequence starting with the new moon
New moon Waxing crescent First-quarter Waxing gibbous Call moon Waning Gibbous Third-quarter Waning crescent
Draw a lunar eclipse
Can you drawl a lunar eclipse?
Draw a solar eclipse and label it
Can you draw solar eclipse?
List of facts about a solstice
Solstice starts in summer or winter the earth is there towards or away from the sun and it starts in June and December
List facts about the equinox
Starts in March and September in the spring or fall and has equal amount of light and dark
Define waxing and waning moon
Waxing see more and more of the moon and waning you see less and less.
Where is a total eclipse visible? In the moons Umbra or penumbra
The total eclipse is visible in the Umbra
Study the diagram on page 730
The picture is the sun in the middle and the degrees of the earth around its orbit. The December solstice 113.5°, the September equinox at 90°, the June solstice is at 66.5° in the march equinox is at 90°.. This is the position of the earth rotating on its axis
