41-50 Flashcards
The earth _________________ on it’s axis, or spins, causing the day/night cycle.
rotates
The earth _________________ around the sun.
revolves
In the lunar cycle, ____________________ means the light is growing larger.
waxing
In the lunar cycle ______________________ means the light is growing smaller.
waning
The larger the object the more ________________ it has.
gravity
____________ is a measurement of distance.
light years
______________ form when plates pull apart from each other.
rift valleys
Mountains form when two plates _________________ with one another.
collide
Most of the oxygen in the atmosphere comes from ________________.
algae in the ocean
___________ and ____________ are the pioneer species, or first organisms, to grow on bare rock.
lichen and moss
