Stars and the Solar System Test

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Stars and the Solar System Test - 28

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Weekly Quiz Competition

Question 1
1 / -0

Choose the correct option to complete the statements given.
Full moon night occurs once every ________.

A
Day

B
$$15$$ days

C
$$20$$ days

D
Month

Solution

Full moon day occurs once every month.
Question 2
1 / -0

Match pairs.
Section-A Section-B
$$(1)$$ Jupiter (P) Bluish colored planet
$$(2)$$ Mars (Q) The most bright planet
$$(3)$$ Venus (R) The biggest planet
$$(4)$$ Neptune (S) Reddish colored planet

A
$$1$$-Q, $$2$$-P, $$3$$-S, $$4$$-R

B
$$1$$-Q, $$2$$-P, $$3$$-R, $$4$$-S

C
$$1$$-R, $$2$$-S, $$3$$-Q, $$4$$-P

D
$$1$$-R, $$2$$-S, $$3$$-P, $$4$$-Q

Solution

(1): Jupiter is the biggest planet in our solar system.
(2): Mars is a reddish coloured planet because of the presence of ferric oxide in its crust.
(3): Venus is the most bright planet.
(4): Neptune is the blue coloured planet.
Question 3
1 / -0

Which of the given planets is the brightest?

A
Mercury

B
Venus

C
Mars

D
Jupiter

Solution

Venus is the brightest planet because its thick clouds reflect most of the sunlight that reaches it (about 70%) back into space, and because it is the closest planet to Earth.
Question 4
1 / -0

The earth and other planets _______ around the sun.

A
revolve

B
rotate

C
moves with constant acceleration

D
remain steady

Solution

revolve
The Earth and other planets revolve around the Sun due to its gravitational force.
Question 5
1 / -0

The earth ________ about its (imaginary) axis.

A
revolves

B
rotates

C
moves with constant acceleration

D
remains steady

Solution

rotates
The Earth rotates about its imaginary axis in space. Earth spins around its axis, just as a top spins around its spindle. This spinning movement is called Earth's rotation.
Question 6
1 / -0

Meteors are

A
Small stars

B
Burnt pieces of comets that fall on earth

C
Comets without tails

D
None of these

Solution

Meteors are burnt pieces of comets. When they reach earth's atmosphere they start burning due to the friction with the atmosphere.
Question 7
1 / -0

The full moon night is called:

A
Purnima

B
Amavasya

C
Both (A) and (B)

D
None of them

Solution

The full moon night is called purnima as well new moon is called amavasya.
Question 8
1 / -0

The hottest planet of solar system is

A
Mars

B
Mercury

C
Venus

D
Pluto

Solution

The hottest planet of the solar system is the one that is nearest to the sun.
Venus is the nearest to the sun. Therefore, Venus is the hottest planet.
Question 9
1 / -0

The first of a month is the new moon day. On fifteenth of the same month, which of the following figures would represent the phase of the moon?

A

B

C

D

Solution

The revolution of the Moon around the Earth makes the Moon appear as if it is changing shape in the sky. From Earth we see the Moon grow from a thin crescent to a full disk (or full moon) and then shrink back to a thin crescent again before vanishing for a few days.

The phases of the Moon depend on its position in relation to the Sun and Earth. As the Moon makes its way around the Earth, we see the bright parts of the Moon's surface at different angles. These are called 'phases' of the Moon.
It takes our Moon about 29.5 days to completely cycle through all eight phases. This is known as a Lunar month.

Hence, on the fifteenth day, it will be a full moon. Above is the diagrammatic representation.
Question 10
1 / -0

The change in seasons on the Earth occurs because

A
the distance between the Earth and the Sun is not constant.

B
the axis of rotation of the Earth is parallel to the plane of its orbit.

C
the axis of rotation of the Earth is perpendicular to the plane of its orbit.

D
the axis of rotation of the Earth is tilted with respect to the plane of its orbit.

Solution

We have seasons because the Earth is tilted as it makes its yearly journey around the Sun.
The Earth's axis is tilted at an angle of $$23.5^o$$. This means that the Earth is always pointing to one side as it goes around the Sun. So, sometimes the Sun is in the direction that the Earth is pointing, but not at other times. The varying amounts of sunlight around the Earth during the year, creates the seasons. The tilt of the Earth's axis is the most important reason why seasons occur.
The tilt of the Earth means the Earth will lean towards the Sun (Summer) or lean away from the Sun (Winter) 6 months later. In between these, Spring and Autumn will occur.
Hence, the seasons occurs because the axis of rotation of the Earth is tilted with respect to the plane of its orbit.

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Re-Attempt Weekly Quiz Competition

Section-A	Section-B
$$(1)$$ Jupiter	(P) Bluish colored planet
$$(2)$$ Mars	(Q) The most bright planet
$$(3)$$ Venus	(R) The biggest planet
$$(4)$$ Neptune	(S) Reddish colored planet

Stars and the Solar System Test - 28

Result

Stars and the Solar System Test - 28

Score

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Rank

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SHARING IS CARING

Question 1

Day

$$15$$ days

$$20$$ days

Month

Solution

Question 2

$$1$$-Q, $$2$$-P, $$3$$-S, $$4$$-R

$$1$$-Q, $$2$$-P, $$3$$-R, $$4$$-S

$$1$$-R, $$2$$-S, $$3$$-Q, $$4$$-P

$$1$$-R, $$2$$-S, $$3$$-P, $$4$$-Q

Solution

Question 3

Mercury

Venus

Mars

Jupiter

Solution

Question 4

revolve

rotate

moves with constant acceleration

remain steady

Solution

Question 5

revolves

rotates

moves with constant acceleration

remains steady

Solution

Question 6

Small stars

Burnt pieces of comets that fall on earth

Comets without tails

None of these

Solution

Question 7

Purnima

Amavasya

Both (A) and (B)

None of them

Solution

Question 8

Mars

Mercury

Venus

Pluto

Solution

Question 9

Solution

Question 10

the distance between the Earth and the Sun is not constant.

the axis of rotation of the Earth is parallel to the plane of its orbit.

the axis of rotation of the Earth is perpendicular to the plane of its orbit.

the axis of rotation of the Earth is tilted with respect to the plane of its orbit.

Solution

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