A) Outer core B) Mantle C) Inner core D) Crust
A) Saturn B) Venus C) Jupiter D) Mars
A) 71% B) 85% C) 50% D) 33%
A) Troposphere B) Stratosphere C) Thermosphere D) Mesosphere
A) Lhotse B) Mount Everest C) K2 D) Makalu
A) Argon B) Oxygen C) Nitrogen D) Carbon dioxide
A) Evaporation B) Photosynthesis C) Respiration D) Fermentation
A) Indian Ocean B) Pacific Ocean C) Southern Ocean D) Atlantic Ocean
A) Alfred Wegener B) Isaac Newton C) Marie Curie D) Charles Darwin
A) Wind energy B) The Sun C) Fossil fuels D) Geothermal energy
A) Astronomy B) Geology C) Ecology D) Meteorology
A) Troposphere B) Thermosphere C) Stratosphere D) Mesosphere
A) Earth, Mars, Jupiter, Saturn B) Sun, Mercury, Venus, Earth C) Jupiter, Saturn, Uranus, Neptune D) Mercury, Venus, Earth, Mars
A) 12 hours B) 48 hours C) 24 hours D) 36 hours
A) Sahara Desert B) Arabian Desert C) Antarctica D) Gobi Desert
A) Prime Meridian B) Tropic of Cancer C) Tropic of Capricorn D) Equator
A) Aurora borealis B) Greenhouse effect C) Rainbow refraction D) Rayleigh scattering
A) Silicon B) Aluminum C) Carbon D) Oxygen
A) Ganymede B) Moon C) Europa D) Titan
A) Paleozoic Era B) Mesozoic Era C) Precambrian Era D) Cenozoic Era
A) Friction B) Magnetism C) Centrifugal force D) Gravity
A) Rodinia B) Laurasia C) Pannotia D) Gondwana
A) The fourth B) The second C) The first D) The third
A) 70.8% B) 85% C) 50% D) 29.2%
A) Earth's distance from the Sun B) The Moon's gravitational pull C) The rotation speed of Earth D) The tilt of Earth's axis with respect to its orbital plane.
A) 100 °C (212 °F) B) -18 °C (0 °F) C) 0 °C (32 °F) D) 14.76 °C (58.57 °F)
A) It acts as a greenhouse gas, helping to maintain liquid surface water. B) It forms clouds that cover only polar regions. C) It blocks all solar radiation. D) It has no significant role.
A) About 365.25 days B) 30 days C) 90 days D) 730 days
A) 50,000 km B) 150 million km C) 700,000 km D) 384,400 km (238,855 mi)
A) It has a circumference of about 40,000 kilometers. B) It is perfectly spherical. C) It has a circumference of about 60,000 kilometers. D) It has a circumference of about 10,000 kilometers.
A) The Cambrian Explosion B) The Ice Age C) The Permian Extinction D) The Great Oxidation Event
A) Since the first billion years of Earth's history. B) For the last 100,000 years C) Since humans emerged D) For the last 500 million years
A) Humanity's unsustainable impact on Earth's climate and biosphere. B) Solar flares C) The Moon's gravitational pull D) Natural volcanic activity
A) In Asia 500,000 years ago. B) 300,000 years ago in Africa. C) In Europe 200,000 years ago. D) In North America 100,000 years ago.
A) To maintain Earth's orbit around the Sun B) To generate electricity C) To deflect most of the destructive solar winds and cosmic radiation. D) To stabilize Earth's axis
A) Volcanic activity B) Differences in captured solar energy between geographic regions. C) The Moon's gravitational pull D) Earth's rotation speed
A) Its lack of greenhouse gases B) The presence of only nitrogen C) Its stability over time D) It sustains surface conditions and protects from meteoroids and UV-light.
A) They have no significant role B) They prevent any geological activity. C) They stabilize Earth's rotation D) They produce mountain ranges, volcanoes, and earthquakes.
A) The absence of an atmosphere B) Volcanic activity C) Earth's proximity to the Sun D) The greenhouse effect from gases like CO2 and water vapor.
A) 5 light-minutes B) About 8 light-minutes (1 AU) C) 15 light-minutes D) 10 light-years
A) It has no effect on Earth's rotation B) It stabilizes Earth's axis and causes tides. C) It increases Earth's rotation speed D) It decreases Earth's rotation speed
A) Its composition and size compared to other rocky planets. B) Its lack of moons C) Its proximity to the Sun D) The presence of a large atmosphere
A) Its proximity to other planets B) The absence of an atmosphere C) Its dynamic atmosphere and liquid water. D) Its lack of tectonic activity
A) Latin B) Old Norse C) Greek D) Middle English
A) *erþō B) *gē C) *terra D) *tellus
A) Late Modern English period B) Old English period C) Early Middle English period D) Classical Latin period
A) Tellus B) Terra C) Gaea D) Gaia
A) Greek Gaia B) Proto-Germanic *erþō C) Latin Terra D) Old English eorðe
A) Terra B) Gaea C) Gaia D) Tellus
A) 5.0 Ga B) 4.54±0.04 Ga C) 6.0 Ga D) 3.8 Ga
A) The formation of the first continents B) The Cambrian Explosion C) The Late Heavy Bombardment D) The Great Oxygenation Event
A) Pangaea B) Gondwana C) Pannotia D) Laurasia
A) 30% B) 10% C) 40% D) 20%
A) 40% B) 20% C) 30% D) 50%
A) the nitrogen cycle B) the phosphorus cycle C) the water cycle D) the inorganic carbon cycle
A) 100 ppm B) 50 ppm C) 10 ppm D) 20 ppm
A) half of it B) all of it C) a significant fraction D) none
A) A perfect sphere B) A rounded shape C) A flat disc D) An irregular shape
A) Chimborazo B) Mount Everest C) Mariana Trench D) Kilimanjaro
A) Crust B) Asthenosphere C) Outer core D) Inner core
A) Core-mantle boundary B) Lithosphere-asthenosphere boundary C) Mohorovičić discontinuity D) Outer core-inner core boundary
A) Gas B) Solid C) Plasma D) Liquid
A) Magnesium B) Iron C) Oxygen D) Silicon
A) 75 mW/m2 B) 87 mW/m2 C) 100 mW/m2 D) 50 mW/m2
A) Exosphere B) Magnetosphere C) Atmosphere D) Ionosphere
A) Aurora B) Substorm C) Solar flare D) Magnetic storm
A) Sedimentary B) Granitic C) Metamorphic D) Basaltic
A) 1000 m (3,280 ft) B) 500 m (1,640 ft) C) 797 m (2,615 ft) D) 1200 m (3,937 ft)
A) Antarctica B) Africa-Eurasia C) Australia D) America
A) Basaltic rocks B) Sedimentary rocks C) Metamorphic rocks D) Igneous rocks
A) The mesosphere B) The hydrosphere C) The lithosphere D) The asthenosphere
A) Three B) Five C) Four D) Two
A) Transform boundaries B) Divergent boundaries C) Convergent boundaries D) Subduction zones
A) Oceanic trenches B) Mid-ocean ridges C) Subduction zones D) Transform faults
A) The South American Plate B) The Cocos Plate C) The Antarctic Plate D) The Eurasian Plate
A) 50% B) 75% C) 97.5% D) 25%
A) The Pacific Plate B) The Nazca Plate C) The Cocos Plate D) The South American Plate
A) 101.325 kPa B) 200 kPa C) 75 kPa D) 150 kPa
A) 70.000% B) 75.000% C) 80.000% D) 78.084%
A) Half B) Three-quarters C) Around two-thirds D) One-third
A) The mesosphere B) The stratosphere C) The troposphere D) The ozone layer
A) Nitrogen B) Oxygen C) Carbon dioxide D) Argon
A) Hydrogen B) Carbon dioxide C) Nitrogen D) Oxygen
A) Humid tropics B) Continental C) Arid D) Cold polar
A) Clockwise B) Northward C) Southward D) Counterclockwise
A) The same length as the stellar day B) Slightly longer than the sidereal day C) Shorter by about 8.4 ms D) Exactly 24 hours
A) 15.0° B) 30.0° C) 45.0° D) 23.439281°
A) Equinox B) Midnight sun C) Solstice D) Polar night
A) Quasiperiodic motion B) Precession C) Nutation D) Chandler wobble
A) Southern Hemisphere B) Both hemispheres equally C) Northern Hemisphere D) Neither hemisphere
A) Chandler wobble B) Quasiperiodic motion C) Precession D) Nutation
A) Elliptical orbit B) Orbital precession C) Circular orbit D) Milankovitch cycles
A) Perihelion B) Solstice C) Aphelion D) Equinox
A) Precession of the equinoxes B) Nutation C) Milankovitch cycles D) Chandler wobble
A) Quasiperiodic motion B) 14-month cycle C) Annual component D) Precession
A) Nutation B) Precession C) Length-of-day variation D) Chandler wobble
A) Atmospheric boundary B) Gravitational field C) Gravity well D) Hill sphere
A) Much larger than the Sun B) Much smaller than the Sun C) Half the size of the Sun D) Almost the same apparent-sized disk
A) 2010 TK7 B) 2006 RH120 C) Vanguard 1 D) 469219 Kamoʻoalewa
A) The International Space Station (ISS) B) Voyager 1 C) Hubble Space Telescope D) Chandra X-ray Observatory |