Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
Download
Chapter 1 - Earth in the Solar System
4,851 plays

More
The Earth In The Solar System

Dr Swasti Sinha
Dental Surgeon | Learner | Educator | Bibliophile | Ambivert

U
Unacademy user
GB
Hello mam My blog www.glbmidhealth.blogspot.in I think in English but my grammar not comfortable pleases guide me
Hi, I would suggest you to work on your grammar from scratch even if you know it. Work on basics and solve worksheets of beginners level. This will help you improve.
NR
wrong...neil armstrong step on moon's surface of the moon on 21st july 1969
VG
mam pls made a videos on mcq format so that we are able to how much we grasp from any particular topic
Maam what is the difference between asteroids and meteroids are they both placed between the mars and Jupiter?
Dr Swasti Sinha
a year ago
@anumehaverma Asteroid: a large rocky body in space, in orbit around the Sun. Meteoroid: much smaller rocks or particles in orbit around the Sun. Meteor: If a meteoroid enters the Earth’s atmosphere and vaporizes, it becomes a meteor, which is often called a shooting star. Meteorite: If a small asteroid or large meteoroid survives its fiery passage through the Earth’s atmosphere and lands on Earth’s surface, it is then called a meteorite. Another related term is bolide, which is a very bright meteor that often explodes in the atmosphere. This can also be called a fireball.
Anumeha Verma
a year ago
so like asteroids.. meteroids also placed in the orbit between mars and Jupiter?
Dr Swasti Sinha
a year ago
yes..both are placed in the same region known as asteroid belt between Mars and Jupiter..
Anumeha Verma
a year ago
Thank u maam
Dr Swasti Sinha
a year ago
☺️
can we see pole star from any part of the world?
Dr Swasti Sinha
a year ago
A pole star is a prominent and visible star that is approximately aligned with the Earth's axis of rotation. It means it's a star whose apparent position is close to one of the celestial poles, and which lies approximately directly overhead when viewed from the Earth's North Pole. The pole star or Polaris is directly above the north pole of the earth and stays there all of the time. All other stars appear to move slowly from east to west as the earth rotates, but the pole star stays stopped at due north. We can't see the pole star at all if we are south of the equator, very close to the equator or in the southern hemisphere. The pole star or Polaris is directly above the north pole of the earth and stays there all of the time.
Vicky Raj
a year ago
First thanks for the reply Mam, but out of curiosity how come the people in southern hemisphere judge the direction at night if the pole star is not visible to them.
Dr Swasti Sinha
a year ago
There are several methods to locate ditections. I will describe a few of them... 1.By locating the crescent moon. The Northern Hemisphere is the portion of the earth that’s north of the equator, while the Southern Hemisphere is comprised of the area below the equator. All of North America and Europe are in the Northern Hemisphere. The northernmost portion of South America, two-thirds of Africa, and most of Asia are also in the Northern Hemisphere. Australia, Antarctica, the southern third of Africa, approximately 90 percent of South America, and some southern islands off the coast of Asia are in the Southern Hemisphere. This method for finding your direction only works if the moon is in either the waxing crescent or waning crescent phases, which occur approximately seven days in each calendar month. The crescent phases typically occur at the beginning and end of the month. If you’re not sure whether there will be a crescent moon on a given evening, there are a number of online calendars that provide the lunar phases for each month. Just do a search for “moon phases calendar” or “lunar phases calendar.” Draw an imaginary line from the moon’s “horns” to the horizon. With your gaze fixed firmly on the moon, image a line from the two points of the crescent that tracks all the way down to the bottom of the skyline. If you are in the Northern Hemisphere, the point where the line meets the horizon is roughly south. In the Southern Hemisphere, the point where the line meets the horizon is roughly north. If you are having trouble following the imaginary line down to the horizon, it may help to hold a stick through the tips of the crescent moon as a guide. 2. Evaluate the trees for their heaviest side. Trees are rarely symmetrical, so one side always seems to have more growth than another. Because plants need sunlight to grow, the side that gets the most sunlight will usually appear heavier. In the Northern Hemisphere, the sun spends most its time in the southern part of the sky, so the denser side of the tree will usually be facing south. In the Southern Hemisphere, the heavier portion of the tree usually points north. In order to accurately decide which side of the tree is the heaviest, you should walk all the way around it a few times. If you only look at one or two sides, you may not be able to tell where the tree is most dense. It’s easiest to use this method with lone trees in an open field. In a wooded area, trees compete for sunlight, so it’s not as obvious which direction they’re growing in. 3. Look for moss on trees. In many cases, moss tends to grow on the side of the trees that is most shaded. In the Northern Hemisphere, that means you would usually find moss on the side of the tree that points north. In the Southern Hemisphere, you would typically find moss on the side of the tree that points south. It’s important to keep in mind that other factors can create shady conditions that would encourage moss to grow on a certain side of a tree. Trees that are shaded by other trees in a wooded area and trees that grow on slopes may throw off your direction. 4. By tracking the movement of or location of sun and moon both ..moving from east to west.. 5. Magnetic compass
Vicky Raj
a year ago
Thank You Mam.
  1. GEOGRAPHY NCERT CLASS 6TH PRESENTED BY Dr. SWASTI SINHA


  2. CONTENTS Chapter1-The Earth in the Solar System Chapter 2-Globe-Latitudes and Longitudes Chapter-3-Motions of The Earth Chapter-4-Maps Chapter-5 Major Domains of Earth Chapter-6-major Landforms of Earth Chapter-7-Our Country-India Chapter-8-India-Climate, Vegetation and Wildlife


  3. Full moon night New moon night Stars Saptarishi etc . Celestial bodies . Constellations-Ursa Major, North Star or Pole Star . Planets . Satellite CHAPTER-1 EARTH IN SOLAR SYSTEM partic /belts of small debris particles


  4. SOLAR SYSTEM .. Sun, planets, satellites, celestial bodies such as asteroids, SOL-Roman Mythology is Sun god. 1. center of solar system, 2.huete". 3. made up of extremely hot gases, 4 pulling force binding the solar system, 5. ultimate source of heat and light for solar system, 6. 150 million km away from earth.


  5. PLANETS 1. Orbits 2. Mercury-nearest planet to sun, 88 days to complete one raund along its orbit' 3. Pluto-takes 248 years to complete one round 4. Venus-earths twin 5. 2003 UB313-a new planet, bigger than Pluto and farthest from sun.


  6. EARTH Third nearest planet to sun .5th largest planet according to size Geoid Astronomers Aryabhatta Life supporting gases-oxygen, water, air 2/3rd of earth surface-covered with water Blue Planet


  7. Only satellite of earth Diameter is 1/4th that of earth 3,84,000km away from us 27 days Conditions unfavorable for life Mountains, plains and depressions on its surface Speed of light 3,00,000 km/s Neil Armstrong-first man to step on surface of moon on 29th July, 1969, MOON


  8. SATELLITES MAN MADE SATELLITES INSAT, IRS, EDUSAT et ASTEROIDS Largest-CERES. METEOROIDS METEOR . . . GALAXY Milky way galaxy


  9. THANK YOU