Part 1: The Air Around Us
|
Part 2: Earth's Atmosphere
|
|
|
Everything in the world is made of matter. Matter is the "stuff" that everything is made of. The amount of matter in an object is its mass.
Mass is the measure of the amount of matter in an object or a substance like air. Mass is measured in grams. One way to confirm that an object or thing has mass is to weigh it. Weight is the pull or force between the earth and the matter in an object. Activity Link:
http://www.quia.com/jg/2633192.html Vocabulary - Words are hyperlinked. Click to open. |
Scientists have described the earth's atmosphere in terms of different layers based on the properties of the atmosphere at different elevations, or layers. These layers are:
• Troposhere = Changing round surface • Stratosphere = Layer of a round surface • Mesosphere = Middle of a round surface • Thermosphere = Hot, round surface • Exosphere = Outside round surface |