Beyond Earth Class 6 Questions and Answers NCERT Solutions
Class 6 Science Chapter 12 Beyond Earth
Intext Questions
Question 1.
Match the column.
| Column I | Column II |
| (i) Satellite of Earth | (a) Orion |
| (ii) Red Planet | (b) Venus |
| (iii) Constellation | (c) Mars |
| (iv) Planets which is commonly called an evening star | (d) Moon |
Answer:
| Column I | Column II |
| (i) Satellite of Earth | (d) Moon |
| (ii) Red Planet | (c) Mars |
| (iii) Constellation | (a) Orion |
| (iv) Planets which is commonly called an evening star | (b) Venus |
Question 2.
(i) Solve the following riddle:
My first alphabet is the MAN but not in CAN.
My second alphabet is in ACE also in FAN.
My third alphabet is the RAT and not in CAT.
My fourth alphabet is in SUN but not in FUN.
Answer:
MARS
(ii) Make two similar riddles by your self.
Answer:
(a) My first alphabet is in VAN but not in PAN
My second alphabet is in EARTH and also in HEAVEN
My third alphabet is in ONE and not in TWO
My fourth alphabet is in SUN and also in FUN
My last alphabet is in STAR but not in RADAR
I am a planet that moves around the Sun.
Answer: VENUS
(b) My first alphabet is in EAT but not in BAT
My second alphabet is in FAT and also in SAT
My third alphabet is in RAT and not in MAT
My fourth alphabet is in TEN and also in NET
My fifth alphabet is in HAT but not in PAT.
I am a planet that moves round the Sun.
Answer: EARTH
Question 3.
Which of the following is not a member of our solar system?
(i) Sirius
(ii) Comets
(iii) Asteroids
(iv) Pluto
Answer:
(i) Sirius
(i) Jupiter
(ii) Pluto
(iii) Neptune
(iv) Saturn
(ii) Pluto
Answer:
Sirius
Question 6.
An artist’s representation of the solar system is given in Fig. Is the order of the planets correct? If not write the correct order in the boxes in the figure.
Answer:
The order of the planets in the figure is not correct. The correct order from the Sun is: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
Question 7.
A portion of night sky with stars is shown in Fig. Look carefully and identify the groups of stars that from the pattern- the Big Dipper and the Little Dipper. Draw lines to connect the stars for these patterns and label the Pole star. You may refer to Fig .12 for help.
Answer:
Question 8.
A portion of night sky is shown in Fig. Draw lines to connect the Stars from Orion and label the stars Sirius. You may refer to Fig
Answer:
Question 9.
You can see stars fading away at dawn and appearing at dusk. During the day we do not see the stars. Explain why?
Answer:
During the day, the Sun’s bright light outshines the stars, making them invisible to our eyes. The atmosphere scatters tire sunlight, creating the blue sky and masking the faint light of the star.
Question 10.
During a clear night try to observe the big depart 3-4 times at an interval of 2-3 hours. Also try to locate the pole star each time. Does the Big Dipper appears to move? Draw a rough sketch. to illustrate this, mentioning the time in each case.
Answer:
The Big Dipper appears to move around the Pole Star due to the rotation of the Earth. Over a few hours, its position changes, making it seem as if it is rotating around the Pole Star.
Question 11.
Think about the night sky and write a poem or a story on it.
Answer:
My mother was telling a story “how the moon appears in the sky everyday.” The new days considered to be day of the moon’s evolution around the earth. On this day we cannot see the moon in the sky. During the first quarter (day 1-day 7), the moon is on the day side of the earth. During this period, on day 2 and 3, a small portion of the bright side of the moon is visible at dusk.
In the next quarter, the moon is seen at night. The bright portion of the moon visible from the earth goes on increasing up to day 14. During the next two quarters (day 14 to day 28), the bright portion of the Moon that is visible from the earth goes on decreasing. In the last quarter, (day 21 – 28 days) the moon is once again visible during the day until the new moon day when it cannot be seen at all.
Activities:
Activity 1.
Aim: To look bright stars in one part of the night sky and imagine a pattern of stars formed by a group of stars.
Material Required: Bright stars in one part of the night sky.
Procedure:
- Look at bright stars in one part of the night sky.
- Draw lines to conned the stars and make the pattern.
- Think of an animal or an object that is similar to the pattern drawn.
- Repeat the above steps and make some more patterns.
Conclusion: We see many jewel-like objects twinkling in the sky. These are called stars.
Activity 2.
Aim : To locate Big Dipper, Pole Star
Material Required : Night sky during summer
Procedure :
- Look for the big dipper during summer time in the early part of the night (around 9:00 p.m.). View the sky above the horizon towards the northern part of the sky and identify the Big Dipper.
- Once you identify the Big Dipper, try to locate the Pole star. Look at two stars present at the end of the Big Dipper’s cup. imagine a straight line passing through these towards the north. At about five times the distance between these two stars, the imaginary line will lead to another star called Pole Star. Pole star situated in the direction of the earth Axis. It does not move.
Activity 3.
Aim: To locate Orion and Sirius.
Material Required: Night Sky during the months of December to April.
Procedure : Look for the Orion during the month of December to April after sunset.
Observations:
- Three bright stars in a short straight line are located around the middle of Orion (imagined to be the belt of a hunter).
- Identify these three stars first.
- Once you identify Orion, it is easy to locate the very bright star Sirus which is located close to Orion. Imagine a straight line passing through the three middle stars of Orion and look along this line towards the east. This will lead to Sirius.
Orion is also called the Hunter Constellation. The three middle stars represent the belt of the hunter. The head and the limbs of hunter are formed from other faint stars. The star Sirus, is the brightest’star in the sky.
Activity 4.
Aim: To identify Venus.
Materials Required : Night sky, telescope.
Procedure:
- When you are viewing at dawn, look for it near the eastern direction before sunrise.
- When you are viewing at dusk, look for it near the western direction after sun-set.
Observations: Venus is visible for 1-3 hours before the sunrise in the eastern sky and 1-3 hours after the sun-set in the western sky near the horizon.
Conclusion: For the most of year, Venus can be located either at dawn or a dusk.