Your Guide to Science Fair Topics, Ideas, Experiments, and Winning Displays
Earth’s Atmosphere can be divided into four layers with distinct changes in temperature as the altitude increases. Starting at Earth’s surface, these layers are: Troposphere: As the altitude increases, the air temperature decreases. The troposphere is hotter near the Earth’s surface because heat from the Earth warms this air. As the altitude increases the number [...]
Temperature is a physical property of how hot or how cold matter is. Cold Objects have a low temperature. Hot Objects have a high temperature. A thermometer is the instrument used to measure temperature.There are several different thermometer scales, the diagram shows a model of a Celsius thermometer. Note that this scale is marked in [...]
The gravitational attraction between the Earth and its atmosphere is greatest near the Earth’s surface. As a result, the density of air molecules is greatest near the Earth’s surface and decreases as the distance from Earth’s surface increases.The greater the density of air molecules the greater is their pressure. Air pressure is greatest at Earth’s [...]
Question: What is the atmosphere? Answer: Some planets, such as Earth and Venus have a layer of gas surrounding the planet, which is called the atmosphere. Earth’s atmosphere reaches out from Earth’s surface for over 350 miles (560 kilometers). The atmosphere diagram (left) represents the density of air in Earth’s atmosphere. The blue dots represent [...]
Atmosphere: The blanket of gas surrounding Earth. Three basic parts of the Earth are: atmosphere ( gas layer surrounding Earth), lithosphere (solid parts of Earth), and hydrosphere (water parts of Earth). We will study these parts separately, starting with the atmosphere. Earth’s Atmosphere Science Terms air The mixture of gases that make up the [...]
ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years.
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