Podcast
Podcast
Podcast
Something went wrong
Questions and Answers
Questions and Answers
What is the function of longitude?
What is the function of longitude?
- To determine the local climate
- To determine the Earth's revolution
- To determine the local time in relation to Greenwich Mean Time (GMT) (correct)
- To determine the Earth's rotation
What is the significance of the International Date Line (IDL)?
What is the significance of the International Date Line (IDL)?
- It is the line that separates the Eastern and Western hemispheres
- It determines the local time in a region
- It is the line that passes through the equator
- It is the longitude where the date changes by exactly one day when it is crossed (correct)
What is the result of the Earth's rotation?
What is the result of the Earth's rotation?
- Causation of day and night, tides (correct)
- Formation of mountains
- Formation of oceans
- Change of seasons
What is the composition of the upper part of the crust according to Eduard Suess?
What is the composition of the upper part of the crust according to Eduard Suess?
What is the approximate mass of the Earth?
What is the approximate mass of the Earth?
What is the duration of the Earth's revolution around the Sun?
What is the duration of the Earth's revolution around the Sun?
What is the significance of the Prime Meridian?
What is the significance of the Prime Meridian?
What is the difference in time corresponding to a 1° change of longitude?
What is the difference in time corresponding to a 1° change of longitude?
What are the three major layers of the Earth's interior?
What are the three major layers of the Earth's interior?
What was the name of the party formed by Motilal Nehru, CR Das, and NC Kelkar in 1923?
What was the name of the party formed by Motilal Nehru, CR Das, and NC Kelkar in 1923?
What was the reason for the opposition to the Simon Commission in 1927?
What was the reason for the opposition to the Simon Commission in 1927?
What was the significance of the Dandi March in 1930?
What was the significance of the Dandi March in 1930?
What was the outcome of the First Round Table Conference in 1931?
What was the outcome of the First Round Table Conference in 1931?
What was the consequence of the clash between the mob and the police at Chauri-Chaura in 1922?
What was the consequence of the clash between the mob and the police at Chauri-Chaura in 1922?
Who was severely beaten in a lathi-charge and later succumbed to death?
Who was severely beaten in a lathi-charge and later succumbed to death?
Where was the Ghadar Party formed?
Where was the Ghadar Party formed?
Who started the Home Rule Movement in 1916?
Who started the Home Rule Movement in 1916?
What was the objective of the Home Rule Movement?
What was the objective of the Home Rule Movement?
What was the outcome of the Lucknow Pact?
What was the outcome of the Lucknow Pact?
What was the basis of the Montague-Chelmsford reforms?
What was the basis of the Montague-Chelmsford reforms?
What was the reaction against the Rowlatt Act?
What was the reaction against the Rowlatt Act?
What was the primary goal of the Deccan Education Society established in 1884?
What was the primary goal of the Deccan Education Society established in 1884?
Who was the founder of the Theosophical Society established in 1875?
Who was the founder of the Theosophical Society established in 1875?
What was the primary aim of the Seva Sadan established in 1885?
What was the primary aim of the Seva Sadan established in 1885?
Who was the founder of the Ramkrishna Mission established in 1897?
Who was the founder of the Ramkrishna Mission established in 1897?
What was the primary goal of the Bharat Stri Mahamandal established in 1910?
What was the primary goal of the Bharat Stri Mahamandal established in 1910?
What was the primary aim of the Mohammedan Anglo-Oriental College established in 1875?
What was the primary aim of the Mohammedan Anglo-Oriental College established in 1875?
Questions and Answers
Something went wrong
Flashcards
Flashcards are hidden until you start studying
Flashcards
Something went wrong
Study Notes
Study Notes
Meteoroids and Meteorites
- Meteoroids are fragments of rocks that come towards the Earth, formed due to collisions among asteroids.
- Meteoroids that do not burn up completely in the Earth's atmosphere and land on the Earth are called meteorites.
- Meteorites are composed of a nickel-iron alloy (10% nickel and 90% iron) and silicate minerals.
Classification of Planets
- Inner Planets: Mercury, Venus, Earth, and Mars, also known as Terrestrial or Rocky planets, are closer to the Sun.
- Outer Planets: Jupiter, Saturn, Uranus, and Neptune, also known as Jovian or Gaseous planets, are farther away from the Sun.
Dwarf Planets
- A dwarf planet is a celestial body in direct orbit of the Sun, massive enough to be controlled by gravitational forces, but has not cleared its neighborhood.
- Examples of dwarf planets: Pluto, Ceres, Eris, Makemake, and Haumea.
Astronomical Units
- A light year is the distance light travels in one year at a speed of 3 × 10^8 m/s.
- An astronomical unit (AU) is the mean distance between the Earth and the Sun.
Earth's Structure
- The Earth is an oblate spheroid, slightly flattened at the poles and bulging at the equator.
- The Earth's perihelion is the nearest position to the Sun, and its aphelion is the farthest position from the Sun.
The Moon
- The Moon's diameter is approximately 3476 km.
- The Moon's average distance from the Earth is approximately 384,365 km.
- The Moon's rotation speed is 27 days, 7 hours, 43 minutes, and 11.47 seconds.
- The time taken by moonlight to reach the Earth is 1.3 seconds.
The Solar System
- The solar system consists of the Sun, eight planets, their satellites, and thousands of smaller heavenly bodies like asteroids, comets, and meteors.
- The Sun is at the center of the solar system, and all bodies revolve around it.
- The Sun is the nearest star to the Earth.
Facts about the Sun
- The Sun's average distance from the Earth is approximately 149,598,900 km.
- The Sun's diameter is approximately 1,391,980 km.
- The Sun's core temperature is approximately 15,000,000°C.
- The Sun's rotation speed is 25.38 days (with respect to the equator) and 33 days (with respect to the poles).
- The time taken by sunlight to reach the Earth is 8 minutes and 16.6 seconds.
Interesting Facts about the Universe
- Jupiter is the biggest planet.
- Ganymede (Jupiter) is the biggest satellite.
- Earth is the blue planet.
- Uranus is the green planet.
- Venus is the brightest planet.
- Sirius (Dog Star) is the brightest planet outside the solar system.
- Proxima Centauri is the closest star to the solar system.
- Neptune is the coldest planet.
- Venus is the morning star and evening star.
- Neptune is the farthest planet from the Sun.
- Jupiter has the maximum number of satellites.
- Saturn has the fastest revolution in the solar system.
- Mercury is the hottest planet.
- Mercury is the densest planet.
- Mercury has the fastest rotation in the solar system.
- Deimos (Mars) is the smallest satellite.
- Titan has an atmosphere like Earth.
Asteroids
- Asteroids are small planetary bodies that revolve around the Sun and are found between the orbits of Mars and Jupiter.
The Earth's Interior
- The Earth's interior is composed of three major layers: the crust, the mantle, and the core.
- Eduard Suess explained the interior of the Earth based on chemical composition as SIAL, SIMA, and NIFE.
Rotation and Revolution of the Earth
- The Earth spins on its imaginary axis from West to East in one day, resulting in day and night, and tides.
- The Earth's motion in an elliptical orbit around the Sun in one year results in changes of seasons.
Statistics Data of the Earth
- Longitudes (Meridians) are a series of semicircles that run from pole to pole, passing through the equator.
- The Prime Meridian passes through Greenwich near London, dividing the Earth into Eastern and Western hemispheres.
- The International Date Line (IDL) is the longitude where the date changes by exactly one day when it is crossed.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Study Notes
Something went wrong
