All Free Everyday Science MCQs with Answers

• A. Seliopause
• B. Meliopause
• C. Heliopause
• D. Beliopause

Explanation: The heliopause is the boundary where the outward pressure of the solar wind balances the pressure of the interstellar medium.

• A. The sun will then expand into a red giant and possibly swallow the outer planets
• B. The sun will then expand into a red giant and possibly swallow the inner as well as outer planets, including Earth
• C. The sun will then expand into a red giant and possibly swallow the inner planets, including Earth
• D. Sun will stay as it is

Explanation: After exhausting core hydrogen, the Sun is expected to expand into a red giant, probably engulfing or destroying the inner planets…

• A. Dark matter is detected through its absorption effects
• B. Dark matter is detected through its gravitational effects on visible matter
• C. Dark matter is detected through its absorption and gravitational effects
• D. Dark matter cannot be detected

Explanation: Dark matter emits and absorbs little or no detectable light, so it is inferred from gravity, such as its effects on galaxy rotation and…

• A. Dark matter interacts with electromagnetic force for very short duration
• B. Dark matter does not interact with electrostatic force
• C. Dark matter does not interact with electromagnetic force
• D. None of the aboveAstronomy

Explanation: Telescope images rely on electromagnetic radiation such as visible light, infrared or radio waves.

• A. Persistence
• B. Desistance
• C. Perseverance
• D. None of the above

Explanation: NASA's Perseverance rover landed in Jezero Crater on Mars on 18 February 2021. The other names are not NASA Mars rover names.

• A. Artemis
• B. Arshamedis
• C. Arsenimdo
• D. Bertonies

Explanation: Artemis is NASA's programme for returning humans to the Moon and preparing for later missions to Mars.

• A. Darker Solar Probe
• B. Walker Solar Probe
• C. Parker Solar Probe
• D. Falkner Solar Probe

Explanation: The Parker Solar Probe studies the Sun's corona and solar wind from closer than any previous spacecraft.

• A. Diversity
• B. Serenity
• C. Curiosity
• D. Divinity

Explanation: Curiosity landed on Mars in August 2012 and has investigated the planet's geology and past habitability ever since.

• A. 60 minutes at an altitude of about 400 km
• B. 60 minutes at an altitude of about 500 km
• C. 90 minutes at an altitude of about 400 km
• D. 90 minutes at an altitude of about 500 km

Explanation: At its roughly 400-kilometre orbit, the ISS travels fast enough to circle Earth about every 90 minutes.

• A. Feliosphere
• B. Seliosphere
• C. Heliosphere
• D. Peliosphere

Explanation: The heliosphere is the vast bubble formed by the Sun's outward-flowing solar wind.

• A. Photosphere
• B. Chromosphere
• C. Corona
• D. A and B

Explanation: The corona is the Sun's extremely hot outer atmosphere, where the solar wind originates and is accelerated.

• A. protons and electrons; flows out from the sun
• B. electrons; flows out from the sun
• C. protons; flows out from the sun
• D. protons and electrons; revolves around the sun

Explanation: Solar wind consists mainly of ionised hydrogen, meaning protons and electrons, streaming outward from the Sun.

• A. Pluto, Cris, and Yeres
• B. Pluto, Bris, and Teres
• C. Pluto, Eris, and Ceres
• D. Yeres, Teres, Ceres

Explanation: Pluto, Eris and Ceres are named dwarf planets, but only Pluto and Eris are officially classified as plutoids because they orbit beyond…

• A. 100,000
• B. 200,000
• C. 300,000
• D. 400,000Purchasing Educational Biology Kits

Explanation: The Oort cloud is a distant, roughly spherical reservoir of icy bodies whose outer region is commonly estimated to reach about 100,000 AU…

• A. The Gort cloud
• B. The Oort cloud
• C. The Fort cloud
• D. The Nort cloud

Explanation: The Oort cloud lies far beyond the Kuiper belt and is thought to surround the solar system as a distant spherical shell.

• A. Venus
• B. Saturn
• C. Neptune
• D. Earth

Explanation: The Kuiper belt begins beyond Neptune, the outermost of the eight major planets. It contains many icy bodies, including Pluto.

• A. Mars and Jupiter
• B. Jupiter and Saturn
• C. Mercury and Neptune
• D. Venus and Uranus

Explanation: The main asteroid belt occupies the gap between Mars and Jupiter. Jupiter's strong gravity helped prevent this material from forming…

• A. Rock, metal, ice and dust
• B. Rock and metal
• C. Metal and gas
• D. Metal, gas and rock

Explanation: Most asteroids are rocky or metallic bodies, unlike comets, which contain much more ice and dust.

• A. Dusty snowballs
• B. Filthy snowballs
• C. Dirty snowballs
• D. Impure snowballs

Explanation: Comets are popularly called dirty snowballs because they contain frozen volatile substances mixed with dust and rocky material.

• A. "coma" around the comet's nucleus and a long tail that points away from the sun
• B. "coma" that points away from the sun and a long tail around the comet's nucleus
• C. Only "coma" around the comet's nucleus
• D. Only a long tail that points away from the sun

Explanation: Solar heating causes a comet's ices to sublimate, forming a coma around its nucleus and a tail directed generally away from the Sun by…