Earth

All 33 words in Earth

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  Industrial waste/ɪnˈdʌstriəl weɪst/n

  Unwanted materials produced by factories and industrial processes.

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  Ozone layer/ˈəʊ.zəʊn ˌleɪ.ər/n. phr

  A layer of gas high above the Earth's surface that protects the planet from the sun's harmful ultraviolet radiation.

  The Ozone layer protects the Earth from harmful ultraviolet radiation.

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  air/er/

  n. atmosphere, gas; v. ventilate, expose; n. aura, vibe

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  archipelago/ˌɑɹkəˈpɛləˌɡoʊ/

  n. island group, island chain

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  continent

  One of Earth's large continuous land areas, such as Asia or Africa.

  Asia is the largest continent on Earth.

• deforestation/ˌdiːˌfɔːrɪˈsteɪʃn/n

  Deforestation is the action or process of clearing large areas of trees.

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  earthquake/ˈɜːrθˌkweɪk/

  n. a sudden violent shaking of the ground caused by movement of rock deep under the earth's surface.

• equator/ɪˈkweɪtɚ/

  The equator is an imaginary line that circles the middle of the Earth.

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  erosion/ɪˈɹoʊʒən/

  n. wearing away, deterioration; n. diminishment, reduction

• greenhouse effect/ˈɡriːn.haʊsɪˈfekt/n phrase

  The warming of Earth's surface caused by gases trapping heat in the atmosphere.

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  hurricanenoun

  n. a violent tropical storm with winds of more than 119 km/h, bringing heavy rain and causing serious damage.

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  island/ˈaɪlənd/n

  n. a piece of land that is completely surrounded by water.

• meridian/məˈɹɪdiən/

  A meridian is a circle of constant longitude passing through a given place on the Earth's surface and the terrestrial poles.

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  mountain/ˈmaʊntən/

  n. a very high area of land with steep sides, much higher than a hill.

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  ocean/ˈoʊʃn/

  n. one of the five very large areas of salt water that cover most of the earth's surface.

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  organism/ˈɔːrɡənɪzəm/n

  n. any living thing, such as an animal, a plant, or a bacterium.

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  pollution/pəˈluːʃn/n

  n. contamination, environmental harm

• preservation/ˌprezəˈveɪʃn/n

  Preservation is the act of keeping something safe from harm, damage, or decay.

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  protect/pɹəˈtɛkt/v

  v. safeguard, shield; v. guard, preserve

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  rainforest/ˈreɪnfɔːrɪst/

  A forest in a tropical area that receives a lot of rain.

• recycle/ɹɪsˈaɪkəl/v

  To process used materials so they can be used again to make new things.

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  reuse/ɹiːˈjuːs/v

  v. recycle, repurpose

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  satellite/ˈsætəlaɪt/n

  n. moon, orbiter, spacecraft, orbital vehicle

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  soil/sɔɪl/n

  The top layer of the earth in which plants grow.

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  solar systemnoun

  a group of planets and the star that they orbit

• the exosphere

  The exosphere is the outermost layer of Earth's atmosphere, where the air is extremely thin and gradually merges with outer space.

  Some satellites orbit within the exosphere.

• the mesosphere

  The mesosphere is the layer of Earth's atmosphere above the stratosphere and below the thermosphere, where many meteors burn up.

  Many meteors burn up as they enter the mesosphere.

• the stratosphere

  the layer of Earth's atmosphere above the troposphere and below the mesosphere

  The ozone layer is found in the stratosphere.

• the thermosphere

  The layer of Earth's atmosphere above the mesosphere, where temperatures increase greatly with altitude.

  Satellites can travel through the thermosphere, even though the air there is extremely thin.

• the troposphere

  The troposphere is the lowest layer of Earth's atmosphere, where people live and most weather occurs.

  Most clouds and weather form in the troposphere.

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  trajectory/tɹəˈd͡ʒɛktəɹi/

  n. the curved path that an object follows through the air or through space after it has been thrown or launched.

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  vacuum/ˈvækjuːm/

  n. a vacuum cleaner, a machine that sucks up dust and dirt; n. a space with no air in it; v. to clean a floor with a vacuum cleaner.

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  volcanic eruption

  an event in which lava, ash, and gases burst out of a volcano

  The volcanic eruption covered nearby villages with ash and forced people to leave.