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CRASH COURSE: ASTRONOMY
LESSON #43- DARK ENERGY
Name -
ם
Hour-
vic
C
en
DIRECTIONS:
1) Review this entire worksheet prior to watching the Crash Course video.
2) Watch the Crash Course video and complete the worksheet questions and vocabulary.
3) Re-watch the video if necessary. Remember, questions will go in order through the video.
4) Complete the video Follow-Up Sections (True/False & Written Response) before turning in your paper.
VIDEO LINK: https://youtu.be/gzLM6ltw310
CRASH COURSE ASTRONOMY LESSON 43-DARK ENERGY (Run Time 11:23)
KEY SCIENCE VOCABULARY
OVER THE COURSE OF THIS VIDEO LESSON IDENTIFY 10 KEY SCIENCE TERMS USED
1-
2-
3-
1) What astronomical object is a Type 1-A?
2) [COMPLETE THE SENTENCE]
The universe is not only
Is getting
every
6-
7-
8-
9-
10-
but it that
3) Based on astronomers calculations, what percentage of the universe is each of these items?
Normal Matter =
Dark Matter=
Dark Energy:
4) What title/framework is given to the question "Will the universe expand forever?"
5) What scientific term is used to describe "the cosmic horizon"?
6) What is the measurable distance of our current "cosmic horizon"?



Answer :

durojaiyesamuel519

Answer:

1) Key Science Vocabulary:

1- Dark Energy

2- Type 1-A supernova

3- Cosmic horizon

4- Universe expansion

5- Dark Matter

6- Supernova

7- Cosmological constant

8- Acceleration

9- Redshift

10- Hubble's Law

1) Type 1-A supernova.

2) The universe is not only expanding but it is also accelerating.

3) Based on astronomers' calculations:

- Normal Matter = 4.6%

- Dark Matter = 26.8%

- Dark Energy = 68.3%

4) The title/framework given to the question "Will the universe expand forever?" is "The ultimate fate of the universe."

5) The scientific term used to describe "the cosmic horizon" is "the observable universe."

6) The measurable distance of our current "cosmic horizon" is 45 billion light-years.