# 01: The Universe | Science | NCERT | Class 8

In this blog we present the one word Question \& Answers for revision from chapter “The Universe”, Science, NCERT Class 8.

Ans. Earth.

Ans. Planet

### Q3. Distance of stars from us can be expressed in terms of ?

Ans. Light years.

### Q4. What is 1 Light Year is equal to ?

Ans. 9.46 x 10$^{12}$

### Q5. What is the distance, from Sun to Earth ?

Ans. 150 million km.

Ans. 8.3 min

### Q7. Which star after the Sun is nearest to Earth ? What is the approximate distance of it from us ?

Ans. Alpha Centuari, 4.3 light years

### Q8. In which direction stars appear to move ?

Ans. East to West

### Q9. Name the star that appears to be stationary ? In which direction it is situated ?

Ans. Pole Star (Dhruv Tara), North

Ans. 29.5 days

Ans. 27.3 days

Ans. Mercury.

Ans. Venus.

### Q14. Which planets have no natural satellites ?

Ans. Mercury and Venus.

Ans. 21st June.

Ans. Mars.

### Q17. Name the natural satellites of Mars ?

Ans. Phobos and Deimos.

Ans. Jupiter.

Ans. Saturn.

### Q20. Name the first planet discovered with the help of telescope ? By whom ?

Ans. Uranus; William Herchel

Ans. 32 hours.

### Q22. What is the approximate age of Sun ?

Ans. 5 billion yrears.

### Q23. Which comet was last seen in 1986 ?

Ans. Halley’s comet.

### Q24. What are meteoroids also known as ?

Ans. Shooting stars.

### Q25. What is the name of first artificial satellite of India ?

Ans. Aryabhata.

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