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Quiz: Our world, other worlds

Test your knowledge of how Earth is different from other planets, both within our solar system and beyond.

Test your knowledge of how Earth is different from other planets, both within our solar system and beyond.

You can browse a gallery containing this quiz and others here.

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NASA Climate Change website

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Quiz: The air we breathe
Quiz: The air we breathe
Video: The ocean's important role in absorbing heat and carbon dioxide from the atmosphere.
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Video: Ocean circulation plays an important role in absorbing carbon from the atmosphere
Video: how different factors, both natural and industrial, contribute to global warming.
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Karen St. Germain, NASA's director of Earth science, gave a presentation at the 2021 United Nations Climate Change Conference.
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Video: What NASA Knows from...
Video: What NASA Knows from Decades of Earth System Observations
Desde 1978, la NASA ha estado monitoreando los vientos oceánicos a través de la dispersometría, cuyos datos han mejorado los pronósticos meteorológicos y de huracanes y nos han ayudado a comprender mejor los patrones climáticos globales.
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Los vientos oceánicos
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Human activities, such as the burning of fossil fuels, have made Earth’s “puffy coat” warmer.
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Graphic: Carbon Dioxide Tra...
Graphic: Carbon Dioxide Traps Heat, Like a Puffy Coat
Graphic: A simplified animation of the greenhouse effect.
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The Greenhouse Effect
Graphic: The Greenhouse Effect
Los aerosoles son diminutas partículas sólidas y líquidas suspendidas en la atmósfera.
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Me llamo Aerosol
Me llamo Aerosol
A detailed look at Jupiter's and Earth's atmospheres and cores as we unlock mysteries of the solar system.
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NASA Earth Right Now promo
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NASA Earth Right Now promo
Video: NASA Earth Right Now promo
NASA's new Orbiting Carbon Observatory-2 space satellite will probe the carbon cycle like never before, telling us where the carbon is going and giving us clues as to where we will end up.
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Atmospheric carbon dioxide ...
Graphic: Measuring carbon dioxide from space
This video shows the accumulation of atmospheric carbon dioxide (CO2) during a single calendar year.
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Global Carbon Dioxide: 2020...
Global Carbon Dioxide: 2020-2021
Video: Simulation of global clouds and aerosols from September 1, 2005, to December 31, 2005.
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Video: Simulated clouds and...
Video: Simulated clouds and aerosols
Graphic: Global surface temperature changes versus the Sun's energy that Earth receives in watts (units of energy) per square meter since 1880.
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Temperature vs Solar Activity
Graphic: Temperature vs Solar Activity
This animation shows the change in atmospheric nitrogen dioxide (NO2) levels as a result of COVID-19 stay-at-home restrictions.
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COVID-19 Mitigation Leads t...
COVID-19 Mitigation Leads to Reduced Pollution Associated with Decreased Fossil Fuel Use
This animation shows how various temperature records and Arctic sea ice have changed between 1850 and 2018 from human and natural drivers of climate change.
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Human and Natural Drivers o...
Human and Natural Drivers of Climate Change (1850-2018)
Climate time machine interactive
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Climate time machine intera...
Interactive: Climate time machine
Video: The NASA satellite fleet in 2017, from low Earth orbit to the DSCOVR satellite taking in the million-mile view.
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Video: NASA's vantage point...
Video: NASA's vantage point to view Earth
Perhaps the most impressive of cloud formations, cumulonimbus (from the Latin for “pile” and “rain cloud”) clouds form due to vigorous convection (rising and overturning) of warm, moist and unstable air. Surface air is warmed by the sun-heated ground surface and rises; if sufficient atmospheric moisture is present, water droplets will condense as the air mass encounters cooler air at higher altitudes. The air mass itself also expands and cools as it rises due to decreasing atmospheric pressure, a process known as adiabatic cooling. This type of convection is common in tropical latitudes year-round and during the summer season at higher latitudes. As water in the rising air mass condenses and changes from a gas to a liquid state, it releases energy to its surroundings, further heating the surrounding air and leading to more convection and rising of the cloud mass to higher altitudes. This leads to the characteristic vertical “towers” associated with cumulonimbus clouds, an excellent example of which is visible in this astronaut photograph. If enough moisture is present to condense and heat the cloud mass through several convective cycles, a tower can rise to altitudes of approximately 10 kilometers at high latitudes and to 20 kilometers in the tropics before encountering a region of the atmosphere known as the tropopause—the boundary between the troposphere and the stratosphere. The tropopause is characterized by a strong temperature inversion. Beyond the tropopause, the air no longer gets colder as altitude increases. The tropopause halts further upward motion of the cloud mass. The cloud tops flatten and spread into an anvil shape, as illustrated by this astronaut photograph. The photo was taken from a viewpoint that was at an angle from the vertical, rather than looking straight down towards the Earth’s surface. The image, taken while the International Space Station was located over western Africa near the Senegal-Mali border, shows a fully formed anvil cloud with numerous smaller cumulonimbus towers rising near it. The high energy levels of these storm systems typically make them hazardous due to associated heavy precipitation, lightning, high wind speeds and possible tornadoes.
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Cumulonimbus cloud over Africa
Cumulonimbus cloud over Africa
Video: NASA scientists release the first new global map of Earth at night since 2012.
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Video: Lights of human acti...
Video: Lights of human activity shine in NASA's image of Earth at night
Visualization of 30 named storms during the 2020 hurricane season
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Video: 2020 Hurricane Season
Video: 2020 Hurricane Season
Track Earth's vital signs and fly along with NASA's Earth-observing satellites.
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Eyes on the Earth
Interactive: Eyes on the Earth
This visualization shows carbon emissions from fires from January 1, 2003 through December 31, 2018. The color bar reflects the quantity of carbon emitted.
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Carbon Emissions from Fires...
Carbon Emissions from Fires: 2003-2018
Las nubes son complicadas cuando se trata de la ciencia del clima, ya que calientan y enfrían la Tierra.
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Las nubes.
Las nubes
Video: Using observations from NASA's Orbiting Carbon Observatory (OCO-2) satellite, scientists developed a model of the behavior of carbon in the atmosphere from September 1, 2014 to August 31, 2015.
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Video: Following atmospheric carbon dioxide

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Interactives, galleries and apps

Images of Change

Images of Change

Explore a stunning gallery of before-and-after images of Earth from land and space that reveal our home planet in a state of flux.
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Climate Time Machine

Climate Time Machine

Travel through Earth's recent climate history and see how increasing carbon dioxide, global temperature and sea ice have changed over time.
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Eyes on the Earth

Eyes on the Earth

Track Earth's vital signs from space and fly along with NASA's Earth-observing satellites in an interactive 3D visualization.
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Global Ice Viewer

Global Ice Viewer

Earth's ice cover is shrinking. See how climate change has affected glaciers, sea ice, and continental ice sheets.
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