General Physical Geography Test 8

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General Physical Geography Test 8

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Question 1
1 / -0

A very small, hot star, the last stage in the life cycle of a star like the Sun is ________.

A
red giant

B
white dwarf

C
supernova

D
black hole

Solution

White dwarfs are very small in size, comparable to that of earth, but they are quite dense and their mass is quite large, comparable to that of Sun. Their luminosity comes from the stored thermal energy. The nearest known white dwarf is Sirius B, about 8.6 light years away from earth.
Question 2
1 / -0

According to Big Bang Theory, our universe sprang into existence as 'singularity' around 13.7 billion years ago. Who proposed Big Bang Theory?

A
Georges Lemaitre

B
Galileo

C
Euclid

D
Aristotle

Solution

Georges Lemaitre was a Belgian catholic priest, an astronomer and Professor of Physics who proposed the Big Bang theory. He was the first one to derive what later became known as the Hubble's law and Hubble's constant. Edwin Hubble later provided a comprehensive observational foundation for Lemaitre's theory.
Question 3
1 / -0

Which one of the following is an object with such a strong gravitational field that even light cannot escape from its surface?

A
Neutron Star

B
White Dwarf

C
Black Hole

D
Supernova Star

Solution

Black hole is a place in space in which matter has been squeezed in a tiny place and gravitational pull is thus so high that even light cannot escape the black hole. Because no light can escape black holes, they are invisible. Black holes are generally formed towards the end of a star's life.
Question 4
1 / -0

Which one among the following statements about the International Date Line is not correct?

A
The International Date Line is largely based on the $${180}^{o}$$ meridian

B
The difference in time between the places just either side of the International Date Line is almost one day.

C
The difference in time to the extent of one day on either side of the International Date Line is caused by inclined axis of the Earth

D
The International Date Line mostly passes through the Pacific Ocean

Solution

The International Date Line is an imaginary line on the earth's surface which defines the boundary between one day and the next and difference in time to the extent of one day on either side of the Line is not caused by inclined axis of the Earth. It is located at around 180 degrees East and mostly passes through the Pacific Ocean.
Question 5
1 / -0

Consider the following statements:
(1) On 21st June, more solar radiation reaches the top of the Earth's surface above the poles than above the equator.
(2) At the North pole, the Sun rises above the horizon on 20th March and day remains for 6 months until it sets on 22nd September.
Which of the statements given above is/are correct?

A
Only 1

B
Only 2

C
Both 1 and 2

D
None of these

Solution

On 21st June, the Sun is directly overhead the Tropic of Cancer and this condition is known as June solstice.

At the North Pole, the Sun rises above the horizon on March equinox, i.e. 20th March and day remains for 6 months until it sets on September solstice, i.e. 22nd September.
Question 6
1 / -0

Consider the following statements:
(1) The part of the Sun that we can see is known as Photosphere.
(2) The outer most part of the Sun, which is visible only at the time of a solar eclipse is known as Corona.
Which of the statements given above is/are correct?

A
Only 1

B
Only 2

C
Both 1 and 2

D
Neither 1 nor 2

Solution

The Photosphere is the visible portion of the Sun that we see from Earth. It is basically a layer about 100 km thick on the surface of the Sun.
Sun's corona is basically the outermost part of its atmosphere, which is a jacket of gases. Corona is not visible during normal times without special instruments due to the brightness of the Sun, but it is visible during a solar eclipse.
Question 7
1 / -0

Why do we have a leap year every four years?

A
The Earth gets shifted out of orbit every four years

B
The revolution slows down a little once in every four years

C
The length of a year is not an integer number of days

D
It is a convention

Solution

The concept of a leap year is basically a corrective measure as the length of a year is not 365 days, but about 365.25 days. This is adjusted in our length of a year every 4 years when 1 more day is added to the month of February.
Question 8
1 / -0

A storm of hot atoms which dissipates from the photosphere of the Sun, overcomes its gravity and goes into the outer space, is known as ________.

A
solar flares

B
sun spots

C
solar fire

D
solar rain

Solution

A solar flare is sudden, rapid and intense variation in Sun's brightness and is caused due to the sudden release of magnetic energy. The flare ejects cloud of ions, electrons, atoms along with the electromagnetic waves through the Sun's corona into the outer space.
Question 9
1 / -0

Earthquakes are caused by ____________.

A
tectonism

B
denudation

C
earth revolution

D
earth rotation

Solution

Tectonism refers to faulting, folding or structural changes on the surface of Earth or any other planet due to various forces. Earthquakes occur due to various reasons, rupture of the geological faults being one of them. Other reasons include landslides, volcanic eruptions, mine blasts etc.
Question 10
1 / -0

Which parts of the Earth's surface experience least variation in incoming solar radiation throughout the year?

A
Poles

B
Equatorial regions

C
Tropics of Cancer and Capricon

D
Arctic and Antarctic circles

Solution

Due to the axial tilt of earth's rotation axis of 23.5 degrees, Sun's rays are almost directly overhead on the Tropic of Cancer in June and on Tropic of Capricorn in December. This causes maximum variation in insolation in polar regions and least in equatorial or tropical regions as the Sun remains between Tropic of Cancer and Tropic of Capricorn and equatorial region receives significant insolation throughout the year.

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Re-Attempt Weekly Quiz Competition

General Physical Geography Test 8

Result

General Physical Geography Test 8

Score

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Rank

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SHARING IS CARING

Question 1

red giant

white dwarf

supernova

black hole

Solution

Question 2

Georges Lemaitre

Galileo

Euclid

Aristotle

Solution

Question 3

Neutron Star

White Dwarf

Black Hole

Supernova Star

Solution

Question 4

The International Date Line is largely based on the $${180}^{o}$$ meridian

The difference in time between the places just either side of the International Date Line is almost one day.

The difference in time to the extent of one day on either side of the International Date Line is caused by inclined axis of the Earth

The International Date Line mostly passes through the Pacific Ocean

Solution

Question 5

Only 1

Only 2

Both 1 and 2

None of these

Solution

Question 6

Only 1

Only 2

Both 1 and 2

Neither 1 nor 2

Solution

Question 7

The Earth gets shifted out of orbit every four years

The revolution slows down a little once in every four years

The length of a year is not an integer number of days

It is a convention

Solution

Question 8

solar flares

sun spots

solar fire

solar rain

Solution

Question 9

tectonism

denudation

earth revolution

earth rotation

Solution

Question 10

Poles

Equatorial regions

Tropics of Cancer and Capricon

Arctic and Antarctic circles

Solution

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