18 Questions
What is the shape of the Earth described as?
Oblate spheroid
Which planet is closest to the sun?
Mercury
What celestial body is considered Earth's twin?
Venus
What is the Moon's position relative to Earth?
It is Earth's satellite.
What does the blue color of Earth from outer space indicate?
The dominance of water on its surface
What decision was taken about Pluto in August 2006 by the International Astronomical Union?
'Dwarf planet' classification along with other recently discovered celestial objects.
What is the result of the moon's rotation on its axis?
Only one side of the moon is visible to Earth
How do meteoroids create a flash of light when approaching Earth?
They get heated up and burn due to air friction
Where are asteroids primarily found in our solar system?
Between the orbits of Mars and Jupiter
What is the main reason scientists believe asteroids are parts of a planet that exploded?
Their similar composition to certain planets
Which feature on the moon's surface creates shadows?
Mountains, plains, and depressions
What is a galaxy?
A huge system of billions of stars, dust, and gases
What is the position of the Earth in the solar system?
Third planet from the Sun
Which celestial body emits its own heat and light?
Star
What is the shape of the Earth known as geoid?
Oblate spheroid
What celestial event occurs once in about a month's time?
Full moon night
Which planet is the biggest among the four closest to the Sun?
Earth
What do we call objects shining in the night sky, including the sun and moon?
Celestial bodies
Study Notes
The Solar System
- The solar system consists of the Sun and eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
- Pluto was previously considered a planet but is now classified as a dwarf planet.
- The planets move around the Sun in fixed paths called orbits.
Mercury
- Mercury is the nearest planet to the Sun, taking about 88 days to complete one orbit.
Venus
- Venus is often referred to as "Earth's twin" due to its similar size and shape to Earth.
Earth
- Earth is the third planet from the Sun and the only planet with conditions suitable to support life.
- It is the fifth-largest planet and has a slightly flattened shape at the poles.
- The Earth's surface is about two-thirds water, making it appear blue from space.
The Moon
- The Moon is Earth's satellite, with a diameter about one-quarter that of Earth.
- It takes about 27 days to orbit the Earth and completes one spin in the same time, making only one side visible from Earth.
- The Moon has mountains, plains, and depressions on its surface, but no conditions suitable for life.
Asteroids and Meteoroids
- Asteroids are small bodies that orbit the Sun, found between Mars and Jupiter's orbits.
- Meteoroids are small pieces of rock that orbit the Sun and can enter the Earth's atmosphere, producing a flash of light.
- If a meteoroid survives entry, it becomes a meteorite and can create a hollow on impact.
Galaxies
- A galaxy is a huge system of billions of stars, dust, and gases.
- The Milky Way galaxy is just one of millions of galaxies that make up the Universe.
Celestial Bodies
- Celestial bodies include the Sun, Moon, stars, and other objects that shine in the night sky.
- Stars are celestial bodies with their own heat and light, including the Sun.
Constellations
- Constellations are patterns formed by different groups of stars in the night sky.
Test your knowledge on the order of planets in the solar system and their characteristics like distances from the sun, orbits, and unique features. From Mercury to Neptune, learn about each planet's position and interesting facts.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
