Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science > astronomy 2 > Flashcards

astronomy 2 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

what is the difference between rotation and revolution

A

rotate-spin

revolution-motion around another object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what does earths rotation produce

A

night and day

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

how do we know earth rotates

A

Foucaults pendulum - earth rotates beneath it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is earths orbit shape

A

elliptical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

how do we know the earth revolves around the sun

A

parallax- shift in position of a nearby star

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

why do we see different constellations

A

because we revolve around the sun

see constellations that are opposite the sun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what are seasons caused by

A

earths revolution

earths tilt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what way is the earth tipped during summer and winter

A

toward the sun

away from the sun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is precession

A

movement of earths axis

axis wobbles slowly over time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

when is the sun highest and lowest in the sky

A

highest on the summer solstice

lowest on winter solstice

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

where does the sun rise and set on the equinoxes

the fall and winter the spring and summer

A

exactly in the east and west
sun rises SE and sets SW
rises NE and sets NW

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is the celestial equator

A

projection of earths equator in space

at the earths equator the celestial equator is directly overhead

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is the ecliptic

A

the path the sun travels in the sky

zodiacs located along the ecliptic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is altitude

A

angle of the sun above the horizon

no direction on altitude

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is moon phase

A

the amount of the moon that is visible from the earth
waxing-revolving toward full
waning-revolving toward new

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

how long does it take for the moon to revolve around the earth

A

moon revolves around earth in 29 days- full moon to full moon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

why does the moon rise and set

A

because the earth rotates

18
Q

what is an eclipse

A

an eclipse is when an object in space passes into the shadow created by another object in space
umbra-total shadow
penumbra-partial shadow

19
Q

types of lunar eclipses

A

total lunar eclipse-moon passes into earths umbra

partial lunar eclipse-moon passes into earths penumbra

20
Q

types of solar eclipses

A

total solar eclipse-moons umbra falls on the earth
partial solar eclipse-moons penumbra falls on the earth
annular eclipse- ring is visible moon doesn’t quite cover the sun

21
Q

how did the moon form

A

formed from a collision with a mars sized object
debris from collision accelerated into the moon
surface bombarded by meteorites

22
Q

properties of the moon

A

gravity 1/6 of earths
rocks are igneous
average density is less than earths
mass is about 1/80 of earths

23
Q

dark area of moons surface

A

maria-basins of basaltic rock 3.1-3.8 billion years old

24
Q

lighter areas of moons surface

A

lunar highlands-on the edge of maria 4.0-4.30 billion years old

25
Q

what causes tides

A

moons gravity and earths rotation

26
Q

what is solar noon

A

occurs when the sun is at its highest point
does not occur at the same time for everyone
earth rotates 15 degrees per hour
every degree of longitude is 4 minutes of solar time

27
Q

4 different time zones

A

eastern
central(-1)
mountain(-2)
pacific(-3)

28
Q

what is the international dateline

A

180 degrees meridian
day starts and date changes when crossing it
moving west-add a day
moving easy-lose a day

29
Q

what is a solar system

A

objects in orbit around the sun
includes:
planets, moons, asteroids, comets

30
Q

greeks early solar system model

A

greeks thought that all planets orbited the earth

geocentric model

31
Q

solar system formation

A

proto-planetary disc -cloud of gas and dust
gravity pulls particles together
sun forms-fusion of hydrogen
planets form from remaining material through accretion

32
Q

inner planets

A 
four planets nearest the sun 
contains heaviest elements 
have solid surfaces 
dense cores 
mercury,venus,earth and mars
33
Q

asteroid belt

A

rocks and dust between mars and jupiter

debris never became a planet because of Jupiter’s gravity

34
Q

outer planets

A 
four planets beyond asteroid belt 
jovian planets or gas giants 
no solid surface 
made up of gases 
solid cores 
Jupiter, Saturn, Uranus, and Neptune
35
Q

kuiper belt

A

belt of debris at the edge of the solar system

dwarf planet pluto is the most massive object in belt

36
Q

which planet is the most massive

A

jupiter

37
Q

which planet have rings

A

saturn

38
Q

what is olympus mons and valles marineris

A

volcano extinct on mars

huge canyon on mars

39
Q

what holds planets in their orbits

A

the suns gravity

40
Q

phases of the moon in order

A 
new moon
waxing crescent 
first quarter
waxing gibbous 
full moon
waning gibbous 
last quarter 
waning crescent

Science (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions