The Solar System and the Earth

The sun-family comprising the sun and its planets, minor planets, asteroids, comet, and aeroliths is called:

What is the centre-point of the solar system?

How many planets are in the solar system?

Approximately how many satellites exist in the solar system?

The number of comets in the solar system is:

The sun is greater than the Earth by:

The Earth is away from the sun approximately by:

The diameter of the sun is approximately:

The temperature of the sun's surface is:

The sun comprises hydrogen by approximately:

The percentage of helium in the sun is:

The percentage of other gases in the sun is:

The black spot sometimes seen in the sun is called:

The heat of the Sunspot is:

In the sun, hydrogen transforms into helium gas by:

The sun revolves on its own axis once in about:

The sun strolls around its own galaxy once in about:

Luminaries influenced by gravitation that revolve around the sun in certain orbits are called:

Planets have:

Which is the largest planet in the solar system?

Which is the smallest planet in the solar system?

Which planet is the closest to the sun?

Mercury is also known as Earth's:

The diameter of Mercury is:

Mercury's weight is equivalent to of the Earth:

Mercury orbits the sun once in about:

The average distance of Mercury from the sun is:

Mercury has natural satellites numbering:

Mercury's surface area is:

The temperature of Mercury is very high because:

On Mercury's surface, what has been noticed?

Which planet is closest to the Earth?

Venus's position from the sun by distance is:

Venus is away from the sun by:

Venus is away from the Earth by:

We see Venus in the western sky as:

Venus appears in the eastern sky at dawn as:

Venus orbits the sun once in:

The number of natural satellites of Venus is:

Carbon dioxide presence in Venus's atmosphere is about:

In Venus's sky, the sun rises and sets:

Acid rain in Venus is due to:

The pressure of air in Venus's atmosphere is stronger than that of Earth by:

Venus's diameter is:

Venus's surface area is:

The Earth's position from the sun by distance is:

The area of the Earth is:

The Earth's diameter in the East-West direction is:

The Earth's diameter in the North-South direction is:

The Earth orbits the sun once in:

The average temperature of the Earth's surface is:

The Earth's natural satellite is:

The average distance of the Earth from the Moon is:

The Earth's atmosphere has sufficient amounts of:

Among the planets, the only one ideal for living is:

Mars stands close to the sun by distance after:

The average distance of Mars from the sun is:

The distance of Mars from the Earth is:

The diameter of Mars is:

The weight of Mars is equivalent to of the Earth:

Mars takes how many days to orbit the sun?

Mars orbits once on its own axis in:

The natural satellites of Mars are:

Mars's atmosphere contains nitrogen by:

Argon gas in Mars's atmosphere is:

The red colour of Mars comes from:

The average temperature of Mars is:

Numerous small planets orbiting in between Mars and Jupiter are called:

A luminary with diameter from 1.6 km to 805 km is called:

Asteroids are located between:

Asteroids are called in a body, name:

Jupiter stands from the sun by distance:

Jupiter's measure is equivalent to about how many fold of the Earth?

The area of Jupiter is:

The diameter of Jupiter is:

Jupiter is away from the sun by about:

Jupiter orbits the sun once in:

Jupiter orbits on its own axis in:

The sun rises and sets in Jupiter:

Jupiter has how many satellites?

Which is NOT one of the most important satellites of Jupiter?

Saturn is the planet of the solar system:

The area of Saturn is:

The diameter of Saturn is:

Saturn is away from the sun by:

Saturn orbits the sun once in:

Saturn orbits on its own axis in:

Saturn is larger than the Earth by approximately:

Saturn's atmosphere contains:

How many bright belts surround Saturn?

Saturn has how many satellites?

Which is a satellite of Saturn?

Uranus is the planet of the solar system:

Uranus is away from the sun by:

Uranus orbits the sun once in:

The average diameter of Uranus is:

The volume of Uranus is larger than Earth by:

The weight of Uranus is heavier than Earth by:

Uranus's atmosphere has a vast amount of:

Uranus has how many satellites?

Which is NOT a satellite of Uranus?

The average diameter of Neptune is:

Neptune is away from the sun by:

The area of Neptune is:

Neptune is largely in colour:

Neptune orbits the sun once in:

Neptune has how many satellites?

The significant satellites of Neptune are:

Neptune is accompanied in its orbit by minor planets called:

The invisible gaseous covering around the Earth is called:

The density of the atmosphere is most at:

Which gases have supremacy in the atmosphere?

Which gas is essential for all kinds of creatures?

Which gas saves plants?

Which gas saves the fauna?

The lowest level of the atmosphere is called:

The average depth of troposphere is about:

Most of the climate and weather processes happen at:

The atmospheric boundary between troposphere and stratosphere is called:

Spacecraft routinely pass through which level without trouble?

The depth of the ozone level is approximately:

The ozone layer absorbs which ray from the sun?

The temperature at the ozone level reaches about:

The atmospheric level which has made the Earth habitable is:

Reasons humans live comfortably on Earth include:

The atmosphere protects fauna from:

Activities that pollute the atmosphere include:

Which level has moistness, clouds, fogs, rains, streams of air?

Above the troposphere, with increase of height, the velocity of air gets:

The interior structure of the Earth is divided into how many layers?

The three layers of Earth's interior in order from inside to outside are:

The radius of the round-shape Earth is approximately:

The radius of the core is approximately:

The specific gravity of the core is:

The core is mainly composed of:

The core is denser than water by how many times?

The core is divided into how many parts based on seismic wave?

The outer part of the core is assumed to be:

The inner part of the core is:

The extent of the outer portion of the core is approximately:

The radius of the inner portion of the core is:

The mantle extends up to which radius from upper level of the core?

The mantle contains heavy metals like:

The upper layer of mantle (1448 km) composed of basalt-like materials is called:

The mantle is named "Sima" because of:

The upper part of the mantle is called:

The crust depth is highest:

The crust depth is least:

The crust depth is considered:

The crust layer is called SiAl because of abundance of:

The earth-crust depth beneath the ocean is:

The earth-crust depth beneath the mountain is:

The average depth of earth-crust is:

The lower part of the crust is called:

The geologists have divided Earth's interior based on:

The line imagined at the North-South over the centre of the Earth is called:

The northern end point of the axis is called:

The southern end point of the axis is called:

The line hemming the Earth across East-West keeping equal distance from both poles is:

The Equator is also called:

The Equator divides the Earth into:

The angular distance of each pole from the Equator is:

The Tropic of Cancer is at latitude:

The Tropic of Capricorn is at latitude:

The Arctic Circle is at latitude:

The Antarctic Circle is at latitude:

The maximum latitude is:

A latitude of 0° to 30° is called:

A latitude of 30° to 60° is called:

A latitude of 60° to 90° is called:

A unit of latitude measure like geometrical angle is called:

An angle of 360° is divided into:

Lines imagined from North to South pole on each division of the equator are called:

Each meridian of longitude is:

Meridians of longitude are:

Each meridian possesses length:

The highest meridian becomes:

The local time is decided through:

The official Prime Meridian runs through:

The Prime Meridian passes over the:

Greenwich meridian serves as which degree?

The Prime Meridian divides 360 degrees into:

Each minute meridian is equal to of a degree:

Where the Equator and prime meridian intersect, both are at:

The intersection of equator and prime meridian falls in:

The Earth rotates from:

When the prime meridian of any region reaches in front of the sun, the time is:

One degree of meridian difference results in time difference of:

One minute of meridian difference results in time difference of:

The Earth orbits 360° once in:

The Earth orbits 1 degree in:

If 12 o'clock at any place, time at 5° East will be:

If 12 o'clock at any place, time at 5° West will be:

The Greenwich exact time can be known by:

The meridian of a place is calculated by:

The local time of a region in the East of Greenwich will be:

The local time of a region in the West of Greenwich will be:

The midday of a region is determined by:

The local time of Greenwich (0° meridian) is accepted as the standard time for:

The standard time of Bangladesh is from GMT:

Which meridian is considered the standard time of Bangladesh?

The 90° East meridian is situated:

The USA has how many standard times?

Canada has how many standard times?

A larger country may have several standard times because:

If Dhaka and Seoul have time difference 2 hours 32 minutes and Seoul is east of Dhaka (90°E), Seoul's meridian is:

Meridian of Dhaka (90°E) and Chennai (80°15'E) — when midday in Dhaka, Chennai's local time is:

A point that stands opposite to any point on Earth's surface is called:

If a region's latitude is 70° North, its antipode's latitude is:

If meridian of one region + antipode's meridian, the sum equals:

If a region's meridian is at 40° East, its antipode's meridian is:

If meridian of one region is East, its antipode's meridian is at:

The time will differ between a region and its antipode by:

The antipode of Dhaka is situated near:

To find an antipode, an imaginary line is drawn from the point through:

The International Date Line is imagined at:

The International Date Line runs across:

Time difference for 1° meridian is:

Time difference for 15° meridian is:

At 180° East meridian, when 10 PM Monday at prime meridian, time is:

While passing the date line eastward, travelers must:

While passing the date line westward, travelers must:

The International Date Line passes through:

The line is bent at Fiji and Chatham islands towards:

The Aleutian islands deviation in the date line is:

The Earth rotates on its own axis from:

The motion of Earth on its own axis is called:

The time for one complete rotation of Earth on its axis is:

The time for one complete rotation of Earth is called:

Day and night occur due to:

The Earth gets illuminated with:

The circular region between lighted and dark parts of Earth is known as:

The time of meager light before sunrise is called:

The time of meager light before sunset is called:

Diurnal motion affects:

Effects of diurnal motion include:

The Earth moves round the sun at speed of:

The time required for Earth to complete one rotation around sun is:

The exact length of solar year is:

Every fourth English year is calculated with additional:

The leap year has:

In a leap year, February has:

The waning and waxing of day-night and changes of seasons happen due to:

The length of the Earth's orbit measures:

The shape of Earth's orbit is:

The closest point to the sun in a planet's orbit is called:

The farthest point from the sun in a planet's orbit is called:

Earth's perihelion occurs around:

Earth's aphelion occurs around:

The Earth always rotates inclining at angle:

On June 21, the North Pole inclines towards the sun at:

On June 21, sunlight falls at 90° at:

On June 21, in the North Hemisphere day is:

On June 21, in the South Hemisphere day is:

The position of the sun on June 21 is called:

On June 21, day lasts 24 hours from Arctic Circle to:

On September 23, the sunlight falls lengthways towards:

On September 23, day and night across the Earth are: