Everyday Science – Physical Sciences

Name the most widely accepted theory about the origin of the universe.

The time of the big ben is taken as time.

In the beginning, the temperature of the universe was _____ million degree centigrade .

Name the famous comet which visited Earth in 1986.

What does NASA stand for ?

When did space shuttle Challenger exploded in which seven astronauts died ?

Who was the pioneer of modern astronomy?

When was famous Halley’s comet first seen ?

Milky Way is a spiral galaxy about-parsecs across ?

Scientists have known since _____ that the universe is expanding.

Light year is defined as the distance travelled by light in one year.This unit is used to measure distances between the galaxies How much is one light year approximately equal to ?

Red shift experiments have shown that the universe is expanding Who first provided evidence for the expansion of the universe ?

Who invented the infrared telescope ?

Parsec is a unit of _____ equal to the distance at which the mean radius of the Earth’s orbit subtends an angle of one second of are.

Astronomical unit is a bigger unit of distance and it is used to measure distance between the heavenly bodies of the Solar System One astronomical unit is equal to how much km in whole numbers ?

A black hole is defined as an object whose matter has become so condensed that its gravitational field is strong enough to prevent light____ from it.

______ is used to measure the speed of an aircraft relative to the speed of sound.

Which is the nearest star to our sun ?

Radio telescope is different from optical telescope.Who was the first to build a radio telescope?

One parsec is equal to 3.26 light year.All the stars are more than one parsec distance from the ____ .

There are millions of galaxies in the universe, A group of galaxies is called galactic cluster What is the name of a small cluster to which our Milky Way belongs to ?

Name the unit of length equal to the average distance between the Earth and sun.

Name the physical state in which most of the matter of the universe is conserved.

The collection of dust,gas and stars measuring thousands of parsecs across.

Hwo many stars are present in our Milky Way galaxy ?

Our ____ is in the Milky Way galaxy.

What is the shape of our Milky Way galaxy ?

Black hole is a hypothetical region in space having tremendously high gravitational pull.Which one of the following also refers to black holes ?

There are more than _____ billions in galaxy.

The Sun revolves around the nucleus of the galaxy once in _____ years This duration is also called the cosmic year.

The Sun is a ______ star of the galaxy.

After Sun,the nearest star proxima Centauri is at a distance of about ______ million kilometers from the Earth.

The sun has nearly _____ times the diameter of the Earth>

Planets are visible only because they reflect.

How much time the light takes to reach from the Sun to the Earth?

Which is the largest planet of our Solar System is ?

The smallest planet of our Solar System is ?

The brightest planet is .

Which planet has maximum number of moons ?

The farthest away planet to the Sun is .

Name the closest planet to the sun.

________ is the fastest planet in rotation .

Earth is the ______ planet from the sun.

Which is the densest planet of our Solar System ?

Mars,also called Red Planet,is covered with.

What is the distance of the moon from the earth ?

The last discovered planet was.

At the time of occurrence of the total solar eclipse, what is the phase of the moon ?

When did Edmund Halley calculate the orbit of Halley’s comet ?

It is possible to see that stars vary in colour. These colour differences reflect differences in.

There are ____ broad classes of galaxies.

Sky looks blue due to scattering of.

Light is scattered by molecules of air, dust particles and water vaporous present in the _____ this scattering is inversely proportional to wavelength of light.

About how many miles above the surface of the Earth, the Hubble Space Telescope is orbiting ?

The Sun rises on the North pole on the 21st March and this Pole remains in light till which date ?

Which planet of our Solar System is called Morning Star?

_____has on moon.

Name the gas which was discovered on the Sun about 130 years ago during eclipse-watching.

Up till now,______satellites (moons) of the planets have been discovered.

The planets perform _____types of motions.

It is accepted that most the planets in the Solar System have or had,rotation period of about _____hours.

What is the approximate age of the sun ?

The mass of Sun is _____ times of mass of Earth.

The Sun is undergoing rotatory motion and a round is completed in about a.

After how much time , a total solar eclipse passes over a particular spot on the Earth ?

Patches on the surface of the Sun are called Sun spots , these spots look .

The visible surface of the Sun is called.

About how much energy is radiated per square meter of sun’s surface into space ?

Flares are fairly short lived outbursts of energy These were discovered by Carrington in .

The orbits of the planet are _____ and lie roughly in the same plane.

There are ____ rocky planets in our Solar System.

There are ____ gaseous planets in our Solar System.

_________ is visible with naked eye shortly after the sunset or shortly before the sunset.

The diameter of Mercury is .

There is no _____ around the Mercury.

The average distance of Mercury from the Sun is _____ kilometers.

Mercury completes its period of one revolution around the Sun in _____ days (of the Earth).

Mercury has an abundance of ____ and other metals.

Which planet is nearly of the same size as that of the Earth ?

The atmosphere of the Venus is extremely thick and the atmospheric pressure of gases is _____ times more as compared with that of the Earth.

Venus rotates from east to west opposite to most other planets and completes one trip in.

The surface temperature of Venus is .

Which gas is dominant in the atmosphere of Venus ?

Atmosphere of Venus is moving .

The average temperature on the surface of the Earth is.

While seen from the moon,the Earth appears as _____ planet with a dynamic layer of white clouds in its atmosphere.

The orbit of the Earth is.

The Earth completes its rotation along its axis in _____ hours and one trip along its orbit in 365 days,6 hours 9 minutes and 9.54 seconds.

The center of the Earth is called _____ and is composed of highly dense liquid.

The surface layer of the Earth the crust,has an average thickness of____km over the continental area.

The temperature at the core is very high about .

Mars is usually visible to naked eye as a bright_____ spot in the sky.

Early imprints of life on Earth have been discovered in rocks, _____ billion years old.

The diameter of the planet (Mars)is .

The average surface temperature of Mars is.

The period of is its rotation is 24.6 hours while period of revolution around the Sun is ____ days .

There is a change of ____ on the Mars .

One of the major reasons besides explorations to send man to Mars is to look for ____ on it.

How many moons Mars have ?

Mars atmosphere is principally composed of.

The second brightest planet in the Sky ,which can be seen with naked eye is.

The distance of Jupiter from Sun is.

The average temperature of Jupiter is.

Jupiter has _____ moons.

The volume of Jupiter is ____ times the volume of Earth .

Jupiter.s atmosphere is observed to be consisted hydrogen and.

The visible cloud layer of the Jupiter is composed of frozen crystals of.

Clouds around the Jupiter are present in about ____ layers.

The moons of Jupiter were discovered by Galileo in.

The lightest planet of the Solar System is .

The average distance of Saturn from the Sun is.

The diameter of Saturn is .

Saturn has _____ moons (satellites).

The temperature of Saturn at cloud top is.

The atmosphere of Saturn contains a major amount of methane and lesser amount of.

_____ was the first planet to be discovered with the help of a telescope.

The diameter of Uranus is .

The temperature (at cloud top) of Uranus is .

The distance of the Uranus from the Sun is .

Uranus completes its rotation in 17.2 hours and trip in its orbit in.

Uranus has ____ moons (satellites).

_____ is called a twin of Uranus due to their similarity of size,mass and composition.

Neptune was discovered in.

The period of rotation of Neptune is 16.1 hours and that of revolution around the Sun is.

The temperature of Neptune at cloud top is.

The diameter of Neptune is .

Neptune has ____ moons.

Pluto has a moon named Charon which discovered in.

Pluto,s rotation period is 6.4 days while period along the orbit is ___ years.

The diameter of Pluto is .

The average temperature of Pluto is estimated to be.

The Moon orbits around the Earth once every.

The mean equatorial diameter of Moon is ____ km.

Moon orbits the Sun once in about ___ days (with the Earth).

Due to absence of air, the Sky is always black and full of.

The first spaceship to land on Moon was Soviet Union,s Sputnik-1 in.

The relationship between the tides (in the oceans ) and the moon was explained with lsaac Newton,s theory of gravitation in.

Asteroids are also called minor planets of the Solar System There are about ___ asteroids.

Meteorites are classified into ____ groups.

There are only 0 (zero) to ____ lunar eclipses per year.

Lunar eclipses occur only at.

Visible light coming from the Sun is composed of ____ colors.