Flashcards

ch 17

Nathan Duck English 11 cards

Cards in this deck (11)

1why the Earth’s atmosphere is importantThe atmosphere is an important part of what makes Earth livable. It blocks some of the Sun's dangerous rays from reaching Earth. It traps heat, making Earth a comfortable temperature. And the oxygen within our atmosphere is essential for life.
2the element that is the most abundant in the Earth’s atmospherenitrogen
3a. What is the second most abundant element in the Earth’s atmosphere?oxygen
4b. What is the third most abundant element in the Earth’s atmosphere?Argon
5what is dry airStandard dry air, which is mainly composed of three gases: nitrogen , oxygen, and argon
65. Why may we feel hot and sticky when it is humidHumidity is uncomfortable because it holds moisture to our bodies, not allowing us to cool
76. How do we measure windAnemometers
88. Name the electromagnetic radiation most abundant emitted via the sun and the earth?Infrared light
9instrument used to measure air pressureBarometers
1012. What is blackbody radiationAny radiation absorbed by a blackbody must eventually be re-radiated back into space as blackbody radiation
11why is the sky blueGases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.