Astronomy
Grade 6 Science Worksheets
Astronomy vs Cosmology
What are stars made of? Which is the galaxy nearest to us? What are black holes? How was the universe formed? Will our sun die?
One of the most intriguing and fascinating fields of study in science is the field of Astronomy. It is the study of our universe – tracking the motions of stars, planets, comets, and all other heavenly bodies, determining how they are formed, and their composition. There is a specialized branch of astronomy, named Cosmology, which deals with understanding things on an even larger scale – how, and how long ago, did the universe form, how did it appear in its early state, what is its current state, and whether and how it will eventually end.
Astronomy attempts to find answers to many such questions that puzzle scientists and all of us humans.
Schedule a Free session to clear worksheet doubts
No credit card required, no obligation to purchase.
Just schedule a FREE Sessions to meet a tutor and get help on any topic you want!
How did the Universe begin?
The best explanation scientists have come up with for the origin of the universe is that it began with an explosion, called the Big Bang, about 13.8 billion years ago. That’s how old our universe is. They term this the Big Bang Theory, according to which, the universe was formed in the following manner –
- A big bang occurred at a Point of Singularity which had infinite density and gravity
- It sent strong radiation in all directions
- It grew into a huge fireball and flung hot matter out in all directions
- This hot, swirling matter started cooling down to form clumps of matter
- These clumps formed the planets, stars, galaxies, our solar system, and all other forms of matter that we know today
Studying the Universe
From the earliest days, humans have looked up at the open sky to observe what’s happening in the universe. At first, it was only with the naked eye. Then the telescope was invented. The telescope enabled astronomers to get a magnified view of the moon, the planets, and the stars. The humble telescope, invented in the days of Galileo and Newton, has become very sophisticated over the years and is today installed in space observatories, satellites, and spacecraft sent on space missions.
The most famous of these space probes is the Hubble Space Telescope which has been hurtled into distant space with powerful telescopes to study distant bodies even more closely.
Personalized Online Tutoring
eTutorWorld offers affordable one-on-one live tutoring over the web for Grades K-12, Test Prep help for Standardized tests like SCAT, CogAT, MAP, SSAT, SAT, ACT, ISEE and AP. You may schedule online tutoring lessons at your personal scheduled times, all with a Money-Back Guarantee. The first one-on-one online tutoring lesson is always FREE, no purchase obligation, no credit card required.
For answers/solutions to any question or to learn concepts, take a FREE TRIAL Session.
No credit card required, no obligation to purchase.
Just schedule a FREE Sessions to meet a tutor and get help on any topic you want!
A Modern Observatory
The Hubble Space Telescope
How was our Sun formed?
Our sun was formed about 4.5 billion years ago, together with all the planets including the earth. Our sun is a star. All-stars have a lifecycle – they are formed, they burn brightly, and then they eventually die. How are they formed and how do they die?
- Stars are created from giant, swirling clouds of gas and dust which are pulled together by gravity to form a dense ball.
- As the ball gets squeezed it becomes very hot and starts to expand, glowing brightly as it lets the heat out.
- A chemical reaction that converts hydrogen into helium is occurring at its core. This reaction is called Nuclear Fusion.
- It stays in such a stable condition for millions or even billions of years.
- Eventually, it runs out of hydrogen and stops generating heat. The core begins to contract while the outer shell expands rapidly. The star becomes a Red Giant.
- Eventually, it explodes, spewing gas and dust all around. This is known as a Supernova Explosion.
- In some cases, the core becomes super-dense matter and creates a Black Hole, which attracts and swallows all nearby matter and energy, including light.
Our sun too will die one day, but that day is estimated to be at least 7 or 8 billion years away!
Check Point
- ________ is a specialized branch of astronomy.
- The origin of the universe began with an explosion called the _________.
- The big bang occurred at a ________ which had infinite density and gravity.
- The chemical reaction occurring at the core of a star is called _______.
- A star which stops generating heat and begins to contract is called a________.
- When a star eventually explodes, it is known as a _______.
Answer Key
- Cosmology
- Big Bang
- Point of Singularity
- Nuclear Fusion
- Red Giant
- Supernova Explosion
Schedule a Free session to clear worksheet doubts
No credit card required, no obligation to purchase.
Just schedule a FREE Sessions to meet a tutor and get help on any topic you want!
Pricing for Online Tutoring
Tutoring Package | Validity | Grade (1-12), College |
---|---|---|
5 sessions | 1 Month | $129 |
1 session | 1 Month | $26 |
10 sessions | 3 months | $249 |
15 sessions | 3 months | $369 |
20 sessions | 4 months | $469 |
50 sessions | 6 months | $1099 |
100 sessions | 12 months | $2099 |
Images Credit:
https://cdn.pixabay.com/photo/2018/01/23/11/44/astronomy-3101270_1280.jpg
https://cdn.pixabay.com/photo/2020/04/23/19/06/space-5083667_1280.jpg
https://cdn.pixabay.com/photo/2017/04/12/16/52/observatory-2224991_1280.jpg
IN THE NEWS
Our mission is to provide high quality online tutoring services, using state of the art Internet technology, to school students worldwide.
Tutoring
Test Prep
Worksheets
Pricing
About Us
Blog
Free Trial
Login
Terms of service
Privacy Policy
Money Back Guarantee
Technical requirements
FAQs
Job Opportunities
Sitemap
Connect with us
+1-269-763-4602
+1-269-763-5024
Online test prep and practice
SCAT
CogAT
SSAT
ISEE
PSAT
SAT
ACT
AP Exam
Science Tutoring
Physics Tutoring
Chemistry Tutoring
Biology Tutoring
Math Tutoring
Pre-Algebra Tutoring
Algebra Tutoring
Pre Calculus Tutoring
Calculus Tutoring
Geometry Tutoring
Trigonometry Tutoring
Statistics Tutoring
Quick links
Free Worksheets
Fact sheet
Sales Partner Opportunities
Parents
Passive Fundraising
Virtual Fundraising
Our Expert Tutors
Safe and Secure Tutoring
Interactive Online Tutoring
After School Tutoring
Elementary School Tutoring
Middle School Tutoring
High School Tutoring
Home Work Help
Math Tutors New York City
Press
©2022 eTutorWorld Terms of use Privacy Policy Site by Little Red Bird
©2022 eTutorWorld
Terms of use
Privacy Policy
Site by Little Red Bird