Celestial Objects and Big Bang theory — task. Science State Board, Class 7.

PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo

Choose the best answers.

1. Retrograde motion describes the ___________

uniform circular motion exhibited by the planets.
backward motion of the stars relative to Earth.
irregular speeds at which the planets travel.
backward motion of the planets with respect to the stars.

2. How old is our universe?

14 thousand years
14 billion years
14 million years
14 trillion years

3. Celestial Object's

and

are determined by epicycle model.

Answer variants:

Direction

Axis

Speed

Distance

Login or Fast registration

Previous exercise

Exit to the topic

Did you find an error?

Register for free to see more content

Register for free to see more content