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why does the world use time zones? 学び始める
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The time zones were established in the 19th century in response to increased global communication and business. The system of time zones allows people to easily determine the time in another location.
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what are features of the time zones in your city or country? 学び始める
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The time zone where I live is one hour after Universal Time. When it's noon in my time zone, it's 11 am GMT in otherworlds.
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a time each day when the sun is at the highest point in the sky
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an imaginary line that separates one country or state from another.
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a skute of disorder in which something is unclear
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a set of criteria or stated values in relation to which measurements or judgements can be made
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GMT (Greenwich Mean Time) 学び始める
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the time in the zero meridian that all other zones are based on.
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any are of 24 geographical regions used to determine time
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is an imaginary line halfway around the globe where the date jumps
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is the practice of setting clocks one hour or more
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is the local time of the zero meridian which passes through Greenwich, England
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is the official time of a zone or region
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is a jump of interruption in the straight line of a time zone
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is a line that can be found at every 15th degrees of longitude, and is used to establish time zones.
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What is the Earth system? 学び始める
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The Earth system is the network of interconnected processes that occur on Earth.
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What areas of study are included in geography? 学び始める
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geology, biology, physical science, social science and political science
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having all constituent parts linked or connected.
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requiring something else in order to function
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a substance or process in nature that people use
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applying to the entire Earth or many parts of it
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something that is necessary in order for something else to occur to be true
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a factor that may change the quality, quantity, size, etc.
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a set of conditions or factors that allow living things to survive in an environment
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How do the biosphere and hydrosphere interact? 学び始める
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The biosphere and the hydrosphere have two different definitions, but their domains overlap. The biosphere includes all life on Earth. This includes humans and other life on land. But it also includes aquatic life, which lives in the hydrosphere. However, some parts of the hydrosphere are not part of the biosphere. This includes water stored in the upper atmosphere.
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the layer that includes the rocky surface of the Earth
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the layer of air around the Earth
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to behave in response to each other
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related to qualities that are seen or touched
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to exist in an area that something else also exists in
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the layer that includes all the Earth's water
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the surface of the Earth, made up of rock and soil
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the inner layer of the atmosphere, closer to the Earth than the stratosphere that contains most of the planet's air
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set of all living organisms on the Earth
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is an outer layer of the atmosphere, farther from the Earth than the troposphere, that filters out harmful rays from the sun.
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What are some features of the Earth's orbit around the sun? 学び始める
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The Earth revolves around the sun, following an elliptical orbit. Since the path is not a perfect circle, the Earth's distance from the sun varies throughout the year. That is why a year is 365 days, with one extra full day every four years to account for the extra 0.25. However, these variations are too small to affect the seasons. The Earth makes one full revolution once every 365.25 days.
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How do the Earth's movements affect conditions on the surface? 学び始める
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The conditions on the surface of the Earth change depending on the position of the Earth in relation to the sun. As the Earth revolves, it remains at a fixed tilt. for half of the year and tilted away for the other half. This causes the changing seasons throughout the year. Of course, the conditions also change each day as the Earth rotates. The 24-hour rotation causes alternating days and nights. As a result, each pole is tilted towards the sun
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switch back and forth repeatedly
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changes to the conditions
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network of objects that revolve around the sun.
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paths that planets follow around the sun
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the orbital position of the Earth on January 3, when it is closed to the sun
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the orbital position of the Earth on July 4, when it is farthest from the sun
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to move in circular motion around a central point
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to turn around a fixed point without changing location.
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part of the year during which a location has particular weather conditions
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light that is cast onto a point at a slant or incline
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light that is cast directly onto a point at a 90° angle
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an astronomical event in which the sun's rays are cast most directly on the equator
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an imaginary line that receives direct light during the Northern Hemisphere's summer solstice
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a region around the North Pole that receives a full day of daylight or darkness
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a region around the South Pole that receives a full day of daylight or darkness
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an imaginary line that receives direct light during the Southern Hemisphere's summer solstice
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an astronomical event in which a point on Earth is tilted farthest from or closest to the sun
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the presence of sunlight during the daytime, so that surroundings are easy to see
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is one half of the Earth, divided by a line such as the equator or a meridian
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a state without light, generally occuring at night
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to learn or to deviate towards a particular direction, rather than being oriented straight up and down.
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state of the atmosphere as it is experienced on the surface of the Earth in a particular time and place, and includes features like temperature and precipition
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