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Question (21)

QN004370

While locating the Big Dipper, students are advised to observe the northern sky during summer at approximately

(A) 6 a.m.
(B) 12 noon
(C) 9 p.m.
(D) 3 p.m.

Correct Answer: C

Explanation:

The activity suggests around 9 p.m.

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Question (22)

QN004371

While locating the Pole Star, the observer should first identify

(A) Orion
(B) Sirius
(C) Big Dipper
(D) Taurus

Correct Answer: C

Explanation:

The Big Dipper is used as a guide.

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Question (23)

QN004372

The imaginary line used to find the Pole Star begins from

(A) The three stars of Orion’s belt
(B) The two stars at the end of the Big Dipper’s cup
(C) Sirius and Betelgeuse
(D) The Pole Star itself

Correct Answer: B

Explanation:

These two stars are called pointer stars.

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Question (24)

QN004373

If the distance between the two pointer stars of the Big Dipper is represented by 1 unit, the Pole Star will be approximately located at

(A) 2 units
(B) 3 units
(C) 5 units
(D) 8 units

Correct Answer: C

Explanation:

The Pole Star lies about five times that distance away.

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Question (25)

QN004374

A student extends the pointer-star line only twice the required distance. Which result is most likely?

(A) Correct identification of Pole Star
(B) Pole Star will appear brighter
(C) Wrong star may be identified
(D) Big Dipper disappears

Correct Answer: C

Explanation:

Incorrect distance can lead to a wrong identification.

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Question (26)

QN004375

Which constellation is described as bright and easy to identify because of three stars in a short straight line?

(A) Taurus
(B) Orion
(C) Ursa Minor
(D) Canis Major

Correct Answer: B

Explanation:

Orion's belt consists of three bright stars.

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Question (27)

QN004376

The three bright stars in Orion form the hunter’s

(A) Crown
(B) Belt
(C) Shield
(D) Spear

Correct Answer: B

Explanation:

They represent Orion’s belt.

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Question (28)

QN004377

After identifying Orion, Sirius can be found by following a line through Orion’s

(A) Belt stars
(B) Head stars
(C) Leg stars
(D) Shoulder stars

Correct Answer: A

Explanation:

Extending the belt line leads to Sirius.

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Question (29)

QN004378

In Activity 12.3, Sirius is located by looking from Orion towards the

(A) North
(B) South
(C) East
(D) West

Correct Answer: C

Explanation:

Look along the line towards the east.

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Question (30)

QN004379

A student identifies Orion correctly but searches westward instead of eastward for Sirius. What is the most likely outcome?

(A) Sirius will still be found easily
(B) A wrong star may be identified
(C) Sirius will become brighter
(D) Orion will disappear

Correct Answer: B

Explanation:

Looking in the wrong direction may lead to a different star.

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Question (21)

While locating the Big Dipper, students are advised to observe the northern sky during summer at approximately

Explanation:

Link:

Question (22)

While locating the Pole Star, the observer should first identify

Explanation:

Link:

Question (23)

The imaginary line used to find the Pole Star begins from

Explanation:

Link:

Question (24)

If the distance between the two pointer stars of the Big Dipper is represented by 1 unit, the Pole Star will be approximately located at

Explanation:

Link:

Question (25)

A student extends the pointer-star line only twice the required distance. Which result is most likely?

Explanation:

Link:

Question (26)

Which constellation is described as bright and easy to identify because of three stars in a short straight line?

Explanation:

Link:

Question (27)

The three bright stars in Orion form the hunter’s

Explanation:

Link:

Question (28)

After identifying Orion, Sirius can be found by following a line through Orion’s

Explanation:

Link:

Question (29)

In Activity 12.3, Sirius is located by looking from Orion towards the

Explanation:

Link:

Question (30)

A student identifies Orion correctly but searches westward instead of eastward for Sirius. What is the most likely outcome?

Explanation:

Link:

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