Answers all the question properly neat and clear..
Attachments:
Answers
Answered by
0
Answer:
- Very simple.
- What is the size of Sun and moon. Why they appear small from earth.
- Same way aeroplane flying in sky appear small even size is way bigger. All this happened due to distance and angular view of field.
- Same feeling you may get easily if you go to very high building and look down in the street, you will see, people height way smaller than actual height.
- sun is a medium size star that appears larger and brighter than other stars because it is closer to us.
- The key to it all is heat and lots of energy. The Moon formed after a collision between Earth and a proto-planet astronomers call Theia. And just after the smash up, there was lots of water vapor — enough that the Moon could’ve had a fairly substantial atmosphere and pools of water on the ground. Volcanic activity was also high, which could have replenished the atmosphere with water vapor from deep in the interior.
- That all happened roughly 4 billion years ago.
- And by the time volcanic activity settled down some 500 million years after the collision, the atmosphere couldn’t cling on — and much like Mars, the Moon dried up.
- Kalpana Chawla, USA
- Chawla became the first woman of Indian descent to go into space, although she was with NASA. She was one of the seven members on the ill-fated space shuttle Columbia, which disintegrated upon atmospheric entry, killing all seven in 2003.
Explanation:
hope it helps;
please mark as brainliest
Answered by
6
Answer:
í
- Explanation:
sulphate
(iv) KNO3 – Potassium nitrate
(v) CaCO3 – Calcium carbonate
3. What is meant by the term chemical formula?
Solution:
- ...Chemical formula is the symbolic representation of a chemical compound. For example: The
Similar questions