1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ilia_Sergeevich [38]
3 years ago
8

1.)Students are using balloons to describe the expanding universe model. The students blow up several balloons and put them on t

he floor. Each balloon represents a different galaxy. How should the students move or change the balloons to demonstrate how the universe is expanding?
All of the balloons should be moved to the center of the floor.

Each balloon should be inflated more so that they are all increasing in size.

Each balloon should be deflated so that there is more distance between the surface of each balloon.

All of the balloons should be moved away from each other so there is more distance between them.

2.)Evidence gathered by studying the composition and movement of distant galaxies indicates that the universe expanded rapidly from a single small point. The universe has continued to expand for over 13 billion years.

Which statement is in agreement with the current understanding of the expanding universe?

A.) All matter and energy were contained inside the small point.

B.) Matter and energy came from areas of the universe and were attracted to the small point.

C.) Matter and energy fell into the small point the same way a black hole attracts matter and energy.

D.) Matter was considered into a single point until energy was attracted to the matter from dark areas of the universe.

3.) Why do scientists believe the universe is still expanding?

A.) The further away from an object is, the temperature and pressure eventually become, causing nuclear fusion.

B.) Distant object shift in frequency toward red on the electromagnetic spectrum, which tells us objects are moving away from us.

C.) Spiral galaxies spin, so they appear to be a rotating disk of stars and dust.

D.) Distant objects shift in frequency toward blue on the electromagnetic spectrum, which tells us objects are closer to us .​
Biology
1 answer:
sattari [20]3 years ago
6 0

Answer:

Explanation:

It’s D for the first one fam

You might be interested in
Polysaccharides are simple sugars. is it true or false
kari74 [83]
True is the correct answer
6 0
3 years ago
Read 2 more answers
What does the cell membrane do for the cell?
krek1111 [17]

Answer:

Protection

Explanation:

The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

3 0
3 years ago
Brainliest + 50 points! Its ya lucky day :D
stepladder [879]

I think the hormone would be testosterone, it would be subjectively deemed useless in times other than procreation. I would suggest that the important hormone is the growth hormone Thank you for your question.

7 0
3 years ago
Read 2 more answers
PLZZZZZZ HELP ME how plants help provide oxygen for animals
VLD [36.1K]
Because people and animals exhale carbon dioxide which plants need and they release oxygen
3 0
3 years ago
Read 2 more answers
Could you use the dichotomous key in this section to identify a species of
Pepsi [2]

Answer:

Yes, the species of a lizard can be identified using dichotomous keys.

Explanation:

A dichotomous key is an identification tool used by the biologists especially taxonomists to identify and classify the organisms.

The dichotomous keys are based on the characteristic feature of an organism for which two which contains two contrasting feature. The dichotomous keys are the most common tools used to classify an organism.

A species of lizard can be identified using these keys by selecting the key characteristic feature  shown by the species which could be quantitative like weight, height or it could be qualitative like colour.  By comparing these characteristics, it becomes easy to identify the species.

5 0
3 years ago
Other questions:
  • Which predictions made by lamarck turned out to be valid?
    8·1 answer
  • HELP NEEDED!¡!!!!!!!
    7·2 answers
  • Can anyone pls help I’m stuck.
    12·1 answer
  • How does water's temperature affect the amount of oxygen in it
    9·1 answer
  • Name 2 sources that you used for your research
    7·1 answer
  • Pleasee help asap!!!
    10·2 answers
  • Which chromosome is affected by epidermolysis bullosa?
    12·2 answers
  • What steps do you take to make a good science fair project?
    14·1 answer
  • Does this graph show an endothermic of exothermic reaction?
    12·2 answers
  • What types of materials require a vesicle for export or a food vacuole for import?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!