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Science Chapter 23:)
Chapter 23 vocab
Question | Answer |
---|---|
Round three-dimensional object. | Sphere |
Elongated enclosed circle | Ellipse |
What does the tilt do?? | Causes season |
In the Northern hemisphere, the Sun reaches the _________ equinox on March 20 or 21 | Spring |
Earth's tilt causes the Sun's ________________ to strike the hemisphere at a different angle. | Radiation |
Earth moves in a(n)_______ around the Sun. a. circle b. ellipse | B |
Earth's _____________ takes place on an imaginary line called its axis. a. rotation b. revolution | A |
The point at which the Sun reaches its greatest distance north or south of the eqautor is___________. a. Equinox b. Solstice | B |
Earth's yearly orbit around the Sun is one_______. a. revolution b.rotation | A |
During a_____________ the dark side of the Moon faces Earth. a.full Moon b.new Moon | B |
There are equal hours of daylight and nighttime during a(n)_______ a. solstice b.equinox | B |
The changing appearances of the Moon as seen from Earth are its_________. a. phases b. maria | A |
After a new moon, when more of the Moon's lighted side becomes visible, the phases are _____________. a. waxing b. waning | A |
When objects hit the moon, they created craters, or __________. a. impact basins b.magnetic fields | A |
Dark, flat regions on the Moon are called_____________. a. umbra b. maria | B |
During a ______________, the moon blocks the sun's rays. a. lunar eclipse b. solar eclipse | B |
Because it bulges slightly at the equator, Earth is not a perfect_______ a. Sphere b. ellipse | A |
What phase occurs between the full moon and the third quarter? | Waning Gibbous |
What phase occurs between the third quarter and the new moon? | Waning crescent |
What phase occurs between the new moon and the first quarter? | Waxing crescent |
What phase occurs between the first quarter and the full moon? | Waxing Gibbous |
Information from Clementine helped the scientists measure the thickness of the moon's____________. a. minerals b. crust | B |
Lunar prospector enabled scientists to confirm that the moon has an iron-rich ___________. a. Core b.ice | A |
Hydrogen is one of the elements that make up___________. a. water b. ice | B |
The Suth Pole-Atiken Basin is an impact crater, or impact _________, on the surface of the moon. a. shadow b. basin | B |
The Clementine spacecraft was placed in ________ orbit. a.thinner b. lunar | B |
Throughout the Moon's rotation, most of the South Pole Atiken Basin stays in __________. a. water b. shadow a. | B |
Clementine also took photographs for use in making a map of the Moon's _____________. a. surface b. crust | A |
Some scientists theorize that __________ may exist in the floors of the craters at the Moon's poles. a.minerals b. water | B |
Data show that the Moon's crust is _________ on the side of the Moon facing Earth. a. thinner b. ice | A |
Another kind of information collected by Clementine indicates what kinds of _____________ make up moon rocks. a. water b minerals | B |