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Question (11)

QN0029903

Which event occurs when the Sun, Earth, and Moon are perfectly aligned and Earth’s shadow falls on the Moon?

(A) Solar eclipse
(B) Lunar eclipse
(C) Equinox
(D) Solstice

Correct Answer: B

Explanation:

Earth blocks sunlight from reaching the Moon.

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Question (12)

QN0029904

A student says that summer occurs because Earth is much closer to the Sun. Why is this explanation incorrect?

(A) Earth never moves around the Sun
(B) The Sun becomes cooler in winter
(C) Seasons are mainly caused by Earth’s tilted axis
(D) Earth rotates more slowly in winter

Correct Answer: C

Explanation:

Tilt changes the angle and duration of sunlight.

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Question (13)

QN0029905

If the Earth’s axis were completely upright instead of tilted, which phenomenon would most likely disappear?

(A) Day and night
(B) Revolution
(C) Seasonal changes
(D) Gravity

Correct Answer: C

Explanation:

Tilt is necessary for seasons.

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Question (14)

QN0029906

Which region on Earth may experience continuous daylight for several weeks during summer?

(A) Equator
(B) Tropic of Cancer
(C) Polar regions
(D) Indian Ocean only

Correct Answer: C

Explanation:

Polar regions experience the “midnight Sun.”

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Question (15)

QN0029907

A person observes that a particular constellation is visible in January but not in July. This is mainly because of

(A) Earth’s revolution around the Sun
(B) Earth’s magnetic field
(C) Solar eclipses
(D) Ocean currents

Correct Answer: A

Explanation:

Revolution changes the visible night sky over months.

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Question (16)

QN0029908

During a partial solar eclipse, a person standing in the penumbra region observes

(A) The entire Sun covered
(B) Part of the Sun covered
(C) The Moon turning red
(D) Complete darkness for hours

Correct Answer: B

Explanation:

Penumbra causes a partial eclipse.

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Question (17)

QN0029909

Which Indian scientist is associated with important observations of solar eclipses?

(A) Jagadish Chandra Bose
(B) M.K. Vainu Bappu
(C) Vikram Sarabhai
(D) S.N. Bose

Correct Answer: B

Explanation:

He conducted important eclipse studies.

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Question (18)

QN0029910

If Earth revolved around the Sun but had no rotation, the duration of one daytime on Earth would be approximately

(A) 24 hours
(B) 30 days
(C) 6 hours
(D) 6 months

Correct Answer: D

Explanation:

One side would face the Sun for nearly half a revolution.

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Question (19)

QN0029911

Which statement about eclipses is scientifically correct?

(A) Solar eclipses happen every month
(B) Lunar eclipses occur only during a full moon
(C) Eclipses occur because stars block sunlight
(D) Lunar eclipses can occur on new moon days

Correct Answer: B

Explanation:

A full moon is necessary for Earth to come between the Sun and Moon.

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Question (20)

QN0029912

A school group safely observes a solar eclipse using a projection technique instead of direct viewing mainly because

(A) The Moon produces harmful radiation
(B) Direct sunlight can damage the retina
(C) Solar eclipses create poisonous gases
(D) Eclipses reduce oxygen in the air

Correct Answer: B

Explanation:

Looking directly at the Sun can permanently harm the eyes.

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Question (11)

Which event occurs when the Sun, Earth, and Moon are perfectly aligned and Earth’s shadow falls on the Moon?

Explanation:

Link:

Question (12)

A student says that summer occurs because Earth is much closer to the Sun. Why is this explanation incorrect?

Explanation:

Link:

Question (13)

If the Earth’s axis were completely upright instead of tilted, which phenomenon would most likely disappear?

Explanation:

Link:

Question (14)

Which region on Earth may experience continuous daylight for several weeks during summer?

Explanation:

Link:

Question (15)

A person observes that a particular constellation is visible in January but not in July. This is mainly because of

Explanation:

Link:

Question (16)

During a partial solar eclipse, a person standing in the penumbra region observes

Explanation:

Link:

Question (17)

Which Indian scientist is associated with important observations of solar eclipses?

Explanation:

Link:

Question (18)

If Earth revolved around the Sun but had no rotation, the duration of one daytime on Earth would be approximately

Explanation:

Link:

Question (19)

Which statement about eclipses is scientifically correct?

Explanation:

Link:

Question (20)

A school group safely observes a solar eclipse using a projection technique instead of direct viewing mainly because

Explanation:

Link:

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