Question

Which is evidence that scientists use to support the big bang theory?

A.
There is constant cosmic background radiation.

B.
Galaxies are moving toward each other.

C.
A loud explosion can be heard in the radio frequencies everywhere in the universe.

D.
Hydrogen and helium are the most abundant elements in the universe.

Answer 1

@psirockin2

Answer 2

Galaxies are moving toward each other.

Answer 3

How are they moving toward each other?

Answer 4

Actually it's a trick question with no real answers. A or B could be right

Answer A's logic: Astronomers and physicists use both the evident expansion of the universe, visible via the moving of galaxies, as well as the *cosmic background radiation*, visible via red or blue shifting the visible spectrum of light.

Answer B's logic: Astronomers, cosmologists, and physicists formulated the "Big Bang" theory to explain the observed expansion of the universe, the observed cosmic background radiation, and several other observations. Real scientists don't seek or use evidence to support a theory made up earlier. And red or blue shifting of visible light has nothing to do with the cosmic background radiation.

So it's your call

Answer 5

OK I CHOSE B

Answer 6

sorry caps

Answer 7

Which force brought together the material from the nebula to form the solar system?

A.
electromagnetism

B.
strong nuclear force

C.
weak nuclear force

D.
gravity

Answer 8

That would be gravity since it holds things in place

Answer 9

How do the outer planets compare to the inner ones?

A.
larger and denser

B.
smaller and less dense

C.
smaller and denser

D.
larger and less dense

Answer 10

larger and less dense

Answer 11

Next question please

Answer 12

Which is the correct position from the center of the solar system of the sun, earth, and moon during a solar eclipse?

A.
sun, moon, earth

B.
sun, earth, moon

C.
earth, sun, moon

D.
moon, sun, earth

Answer 13

i think sun, moon, earth

Answer 14

During which lunar phase is the moon’s near side entirely lit?

A.
full moon

B.
new moon

C.
half moon

D.
first quarter

Answer 15

full moon

Answer 16

How long is the moon’s rotational period?

A.
one day

B.
one week

C.
one month

D.
one year

Answer 17

one month

Answer 18

Which occurs during winter in the Northern Hemisphere?

A.
The earth is closer to the sun.

B.
The earth's axis is tilted so that the Northern Hemisphere faces the sun.

C.
The earth's axis is tilted so that the Northern Hemisphere faces away from the sun.

D.
The earth is farther away from the sun.

Answer 19

The earth's axis is tilted so that the Northern Hemisphere faces away from the sun.

Answer 20

What season does the southern hemisphere experience when it is tilted away from the sun?

A.
winter

B.
summer

C.
autumn

D.
spring

Answer 21

i think winter

Answer 22

Winter makes the most sense

Answer 23

next question

Answer 24

Which one of the date ranges shown below are the days and nights about the same length in the Northern Hemisphere?

A.
around March 21 and September 22

B.
around March 20 and December 21

C.
around June 21 and September 22

D.
around June 21 and December 21

Answer 25

brb gotta poo

Answer 26

tmi

Answer 27

around March 21 and September 22

Answer 28

Closest to which date is the Southern Hemisphere tilted most directly toward the sun?

A.
December 21

B.
March 21

C.
June 21

D.
September 21

Answer 29

December 21

Answer 30

Upon which does the amount of gravitational pull between two bodies depend?

A.
the speed by which they travel

B.
the angle of the orbital plane

C.
the volume of the largest body

D.
the distance between the two bodies

Answer 31

@21Pilots

Answer 32

the distance between the two bodies

Answer 33

What is the name for millions of stars held together by gravity?

A.
constellation

B.
galaxy

C.
supernova

D.
solar system

Answer 34

galaxy

Answer 35

Which contribution did Copernicus make to our view of the solar system?

A.
He proposed the sun-centered model of the solar system.

B.
He showed that planets moved in elliptical orbits.

C.
He proposed that gravity kept the planets in their orbits.

D.
He proposed the earth-centered model of the solar system.

Answer 36

He proposed the sun-centered model of the solar system.

Answer 37

What kind of information did Sputnik I and II provide?

A.
the approximate age of the moon

B.
the composition of the Martian surface

C.
the temperature at the sun’s core

D.
information about earth’s outer atmosphere

Answer 38

D

Answer 39

Which was one of the main objectives of the Apollo project?

A.
to send the first American into space

B.
to land on and explore the moon

C.
to orbit the earth

D.
to build a space station

Answer 40

to land on and explore the moon

Answer 41

Which is a unique feature of Mars?

A.
The thick atmosphere—made mostly of carbon dioxide—absorbs solar radiation, heating up and helping make the atmosphere very hot

B.
It is the smallest planet and has the shortest period of revolution around the sun.

C.
The planet’s surface is covered with red, iron-oxide dust.

D.
It is the only planet with permanent liquid water on its surface.

Answer 42

The planet’s surface is covered with red, iron-oxide dust.

Answer 43

Which is a unique feature of Venus?

A.
The thick atmosphere—made mostly of carbon dioxide—absorbs solar radiation, heating up and helping make the atmosphere very hot.

B.
It is the smallest planet and has the shortest period of revolution around the sun.

C.
The planet’s surface is covered with red, iron-oxide dust.

D.
It is the only planet with permanent liquid water on its surface.

Answer 44

The thick atmosphere—made mostly of carbon dioxide—absorbs solar radiation, heating up and helping make the atmosphere very hot.

Answer 45

Which is a unique feature of Mercury?

A.
It is the only planet with permanent liquid water on its surface.

B.
The planet’s surface is covered with red, iron-oxide dust.

C.
The thick atmosphere—made mostly of carbon dioxide—absorbs solar radiation, heating up and helping make the atmosphere very hot.

D.
It is the smallest planet and has the shortest period of revolution around the sun.

Answer 46

It is the smallest planet and has the shortest period of revolution around the sun.

Answer 47

your still giving me direct answers you know that right?