Seasons, Weather, Climate Flashcards
rotation def
spins on axis
how long does rotation take?
23hrs 56 min 4 sec
what % of Earth is experiencing daylight at any time
50%
revolution def
orbiting, going around dun
1 revolution takes _____ days
365.25
top sun no shade
march 20
summer equinox
hemisphere gets same amount of light this day because tilt is not towards or away (equal night”
bottom sun all shade
sept 23
fall equinox
tilt of earth is not towards or away “equal night”
left of sun
june 21
summer solstice
NH angled towards sun= more direct light
right of sun
dec 22
winter solstice
NH angled away from sun= more indirect light
Sun pictured on the same day all year looks like?
like a figure 8
sun highest during summer solstice
lowest during winter solstice
how do we know air is something?
can measure the mass of gases like air
Ex. weigh balloon before and after blown up= mass changed
pressure describes?
- the force of a substance over an area
- provide a force in all directions
- gas pressing out on all sides container & molecules bounce off
what makes up the atmosphere?
-layers of gas that surround earth
why does the atmosphere stay around the earth?
- gravity holds gas molecules together
- molecules are escaping into space in upper part of atmosphere
does the atmosphere end?
- it fades out other than ending.