Gravity, The Universe, Galaxies

Question 1

the linear correlation between the rate of the expansion of the universe and distance

Answer 1

the hubble law

Question 2

The idea that the sun, not the earth, was the center of the universe.

Answer 2

Copernican hypothesis

Question 3

the night sky ___________ depending on where you are on earth

Answer 3

changes

Question 4

The point directly above you

Answer 4

Zenith

Question 5

The point below you

Answer 5

Nadir

Question 6

constellations that never rise or set

Answer 6

circumpolar constellations

Question 7

big bear and little bear

Answer 7

Ursa Major and Minor

Question 8

line from north to south

Answer 8

Meridian

Question 9

angle of a star above your horizon

Answer 9

altitude

Question 10

An apparent shift in the position of an object when viewed from different locations

Answer 10

Parallax

Question 11

The death of a large star by explosion

Answer 11

Supernova

Question 12

The theory that the universe originated in a huge explosion that released all matter and energy.

Answer 12

The Big Bang Theory

Question 13

radiation uniformly detected from every direction in space; considered a remnant of the big bang

Answer 13

Cosmic Background Radiation

Question 14

how long does it take a zodiac sign to change

Answer 14

a month

Question 15

Which constellation looks like a teapot?

Answer 15

Sagittarius

Question 16

the force that attracts a body toward the center of the earth, or toward any other physical body having mass.

Answer 16

Gravity

Question 17

the orbits of the planets around the sun are ellipses with the sun at one focus

Answer 17

Keplers 1st law

Question 18

a line from a planet to the sun sweeps over equal areas in equal intervals of time

Answer 18

Keplers 2nd law

Question 19

the two quantities, orbital period and semi-major axis, are related

Answer 19

Keplers 3rd law

Question 20

what is issac newton known for?

Answer 20

Telescopes, Calculus and Physics

Question 21

the force of gravity between two objects depends on _____ and _____

Answer 21

mass and seperation

Question 22

Low Earth Orbit

Answer 22

LEO

Question 23

Geostationary Orbit

Answer 23

GEO

Question 24

Sub-Orbit

Answer 24

craft does not complete orbit

Question 25

a set of gravitationally stable points related to the Earth, Sun, Moon's mutual gravity

Answer 25

Lagrange points

Question 26

the speed needed to escape an object's gravitational pull

Answer 26

Escape Velocity

Question 27

Why are astronauts weightless?

Answer 27

They are in free fall

Question 28

the sun ______________ as a result of the gravitational pulls of the orbits of the planets

Answer 28

wobbles

Question 29

shapes of orbits

Answer 29

circle, ellipse, parabola, hyperbola

Question 30

The gravitational attraction between masses is a result of the nearby masses; gravity has waves

Answer 30

General Relativity

Question 31

Gravitational waves are

Answer 31

ripples in the fabric of space-time

Question 32

imaginary line in the sky representing the projection of the Earth's equator on to the celestial sphere

Answer 32

celestial equator

Question 33

imaginary points in the sky which is the projection of the north/south pole on the night sky

Answer 33

North and South Celestial Poles

Question 34

circle of ground around you

Answer 34

Horizion

Question 35

angle of star NE from N-360 degrees all around

Answer 35

Azimuth

Question 36

the motion of a body around a point outside the body

Answer 36

Revolution

Question 37

a great circle on the celestial sphere representing the sun's apparent path during the year, so called because lunar and solar eclipses can occur only when the moon crosses it.

Answer 37

Ecliptic

Question 38

The brightness of an object depends on --- and ----

Answer 38

distance and size

Question 39

the ___________ the object, the ____________ it will be

Answer 39

larger; brighter

Question 40

the absorption lines in a galaxy's spectrum will be shifted toward redder wavelength if the galaxy is moving away from us

Answer 40

redshift

Question 41

The succession of methods by which astronomers determine the distances to celestial objects

Answer 41

Cosmic Distance Ladder

Question 42

T/F: There is a center to the expansion of the universe

Answer 42

false

Question 43

What universe is it when parallel lines converge?

Answer 43

Closed

Question 44

What universe is it when parallel lines diverge

Answer 44

open

Question 45

What universe is it when parallel lines stay parallel to each other?

Answer 45

flat

Question 46

what shape is our universe?

Answer 46

flat

Question 47

what color did our universe use to be?

Answer 47

orange

Question 48

flat, young stars are

Answer 48

disk

Question 49

puffy center with older stars

Answer 49

bulge (nucleus)

Question 50

spherical region surrounding galaxy with globular clusters

Answer 50

halo

Question 51

small spherical clusters of the oldest stars

Answer 51

globular cluster

Question 52

what creates seasons?

Answer 52

the amount of sunlight

Question 53

what is the difference in the northern and southern hemisphere

Answer 53

the sun climbs towards the south of the sky in the northern hemisphere

Question 54

what consellation looks like a hunter?

Answer 54

orion

Question 55

what constellation looks like a bull?

Answer 55

taurus

Question 56

The motion of the Sun through the Zodiac Constellations throughout the year is caused by...

Answer 56

the earths revolution