sc Flashcards

1
Q

a day when earth’s rotation axis is the most toward or away from the sun

A

solstice

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2
Q

a spinning motion

A

rotation

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3
Q

when the moon moves into earth’s shadow

A

lunar eclipse

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4
Q

less of the moons near side is lit each night

A

waning phase

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5
Q

more of moons nea side is lit each night

A

waxing phase

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6
Q

The central, darker part of the shadow where light is totally blocked

A

umbra

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7
Q

the daily rise and fall of sea levels

A

tide

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8
Q

the large dark areas of the moons craters

A

maria

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9
Q

the lighter part of the shadow where light is partially blocked

A

penumbra

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10
Q

the line on which an object rotates

A

rotation axis

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11
Q

the motion of an object around another object

A

revolution

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12
Q

the path an object follows as it moves around another

A

orbit

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13
Q

the portion of the moon or planet reflecting light as seen from the earth

A

phase

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14
Q

a day when the earth’s rotation is leaning along earths orbit, neither towards nor away from the sun.

A

equinox

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15
Q

when the moon’s shadow appears on the earth’s surface

A

solar eclipse

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16
Q

why does the earth orbit the sun

A

gravity

17
Q

what causes the seasons on earth

A

the tilt of earths axis and the way it rotates around the sun

18
Q

When does each solstice and equinox occur? (not on test) what is happening during this time

A

dec.-winter in the northern, summer in the southern
march-spring in the northern, fall in the southern
sep.-fall in the northern, spring in the southern
june- summer in the northern, winter in the southern

19
Q

What is one way scientists think the moon was formed

A

an asteroid collided with earth, formed a ring around earth causing a chunk of the object to come off and enter the orbit

20
Q

draw a new moon

A

all black

21
Q

draw a waxing crescent

A

small amount of light showing on the right

22
Q

draw a first quarter moon

A

light half way on the right

23
Q

Draw a waxing gibbous

A

little over half moon, light on the right

24
Q

Draw a full moon

A

all white

25
Q

draw a waning gibbous

A

a little over half moon, light on the left

26
Q

draw a third quarter moon

A

light halfway on the left

27
Q

draw a waning crescent

A

small amount of light showing on the left

28
Q

draw a solar eclipse

A

from right to left, sun, moon, earth. penumbra on the outside, umbra on the inside.

29
Q

What causes tides and how often a day do they occur

A

The strength of moon’s gravity on the oppisite side of earth’s, causes it. It happens twice a day

30
Q

What is the difference between a spring tide and a neap tide

A

A spring tide is when the sun’s and the moon’s produce higher high tides and lower low tides.
A neap tide is when the sun’s effect reduces the moon’s effect and high tides are lower and low tides are higher