Physics · General Awareness

Astronomy and Space Science

3,057 Questions

Astronomy and Space Science questions explore observational instruments, spectroscopy, space stations, and astrostatistics. These scientific concepts are vital for SSC, railways, and UPSC preliminary exams. Test your knowledge of space technology and astronomical history with these practice questions.

Spectroscopy techniquesSpace station usesAstronomical instrumentsAstrostatistics basicsExoplanet research programs

Astronomy and Space Science Questions

Multiple choice physics universe and space science xx radio telescope and space telescopes launching vehicles optical instruments : telescope

Astronomical data taken with ________________ must undergo several calibration steps before they are suitable for astronomical analysis

  1. HOST

  2. CCD

  3. CCR

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Astronomical data taken with CCD (charged couple devices) must undergo several calibration steps before they are suitable for astronomical analysis.

Multiple choice physics life cycle of stars evolution and end stages of stars the stars stars

Why does a star grow larger after it exhausts its core hydrogen?

  1. The outer layers of the star are no longer gravitationally attracted to the core.

  2. Hydrogen fusion in a shell outside the core generates enough thermal pressure to push the upper layers outward.

  3. Helium fusion in the core generates enough thermal pressure to push the upper layers outward.

  4. Helium fusion in a shell outside the core generates enough thermal pressure to push the upper layers outward.
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Multiple choice physics life cycle of stars evolution and end stages of stars the stars stars

As the age of star increases

  1. Helium quantity increases

  2. Helium quantity decreases

  3. Helium quantity does not

    change

  4. Helium, Hydrogen both

    quantities increases
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

As a star ages, it fuses hydrogen into helium in its core. Therefore, the proportion of helium increases over time as the hydrogen fuel is consumed.

Multiple choice evs solar energy water cycle earth's energy budget solar energy and its applications

The correct order of spatial location of different layer of sun are

  1. core-radiative zone-convective zone-photosphere-chromosphere-transition region

  2. core-convective zone-chromosphere-photosphere-radiative zone

  3. core-convective zone-photosphere-chromosphere-convective zone-radiative zone

  4. core-radiative zone-convective zone-chromosphere-convective zone-photosphere
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The correct spatial order from the center outward is: Core, Radiative Zone, Convective Zone, Photosphere, Chromosphere, and Transition Region.

Multiple choice

broaden your horizon

  1. wide angle binoculars

  2. gain knowledge or experience

  3. view from the space shuttle

  4. get to know moe people
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Broadening your horizon is an idiom meaning to expand your range of interests, knowledge, or experience. It is not about literal sight.

Multiple choice social science universe and space the big bang and the early development of the universe origin of universe evolution of the universe

State whether true or false :
When Meteor enters the atmosphere of the earth, it gets heated due to friction of the air.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When a meteoroid enters Earth's atmosphere, it travels at high speeds. The friction with atmospheric gases generates intense heat, causing the object to glow and often vaporize, which we see as a shooting star.

Multiple choice

Why do scientists collect data during an observation or investigation?

  1. To do math

  2. To make a graph

  3. To answer a question about the world

  4. For the science fair
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The primary goal of science is to understand the natural world. Scientists collect data to answer specific questions, test hypotheses, and build reliable knowledge about how things work. While math and graphs are tools used to analyze data, they are not the ultimate purpose of the investigation.

Multiple choice

The three conditions that allow for life to exist on Earth are known as ______________________

  1. the Goldilocks conditions.

  2. the Greenhouse Effect

  3. the Habitable Zone.

  4. the Solar System.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Goldilocks conditions refer to the specific set of environmental factors, such as temperature and the presence of water, that make a planet suitable for life. The other terms refer to specific physical phenomena or locations rather than the conditions themselves.

Multiple choice

What affect does a telescope have when looking at stars?

  1. It magnifies stars.

  2. it makes stars appear more colorful.

  3. It reduces their size.

  4. It makes them appear farther away.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Telescopes use lenses or mirrors to gather more light than the human eye, which allows them to magnify distant objects and make them appear larger and clearer.

Multiple choice

A telescope is

  1. a tool used to measure the temperature

  2. equipment used to view far-away stars

  3. a tool used for seeing things that are close
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A telescope is an optical instrument designed to make distant objects appear closer and larger by gathering light. It is not used for measuring temperature or viewing nearby objects.

Multiple choice

How long does Venus take to orbit the Sun?

  1. 225 days

  2. 400 days

  3. 525 days

  4. 750 days
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Venus has an orbital period of approximately 224.7 Earth days, which is commonly rounded to 225 days in educational contexts.