1
Observe and describe the growth of crystals from everyday materials.
Grade Level   5 6
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2
In this activity you can compare your local soil with that of classmates and with a description of the soil found on Mars.
Grade Level   5 6
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3
In this activity, you will explore local rocks for signs of the Rock Cycle, the sequence of making and breaking down rocks.
Grade Level   5 6
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4
There is water all over Earth in different forms. By far, most of the planet's water is in the oceans, but it is in other places as well. Sometimes water is a liquid, sometimes it is a solid, and sometimes it is a gas. These changes in the states of matter are the result of the water either gaining...
Grade Level   5 6
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5
Water in its liquid state is visible, as ponds, streams, water in bottles, and wet surfaces. You can also see water in its solid form , ice and snow. Water as a gas in the air, also called water vapor, is invisible. The process of visible liquid water turning into invisible gaseous water is called...
Grade Level   5 6
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6
Earth's temperature is set, in part, by a balance between incoming radiation energy from the Sun and outgoing radiation energy into space. If more energy comes in than leaves, Earth's temperature will rise, and vice versa. The atmosphere plays a big role in this balance. In this activity, you will...
Grade Level   6 7 8
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7
Sunlight is constantly falling on Earth. At the same time, Earth is losing energy to the cold emptiness of outer space. In this activity, you will use a computer model to explore what happens to the Sun's energy when it strikes Earth.
Grade Level   6 7 8
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8
Crystals are much sought after by jewelers and industrialists alike. Their value is directly related to their perfection. In this activity, you will explore some features of crystals.
Grade Level   6 7 8
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9
Molecular crystals are formed by one or more kinds of molecules tiled in regular patterns in microscopic space. A common example is solid carbon dioxide, also known as dry ice, which is often used to pack and keep ice cream cold. In this activity, you will use a set of molecular models to explore...
Grade Level   6 7 8
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10
You will create a model of a watershed with paper. By observing how surface water flow is determined by the shape of the land, you will visually and dramatically observe the physical characteristics of a watershed, and investigate the impacts of human land use decisions.
Grade Level   6 7 8
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11
Published in 2016
A watershed is the area of land that water flows over to reach a river, lake, or a stream. Near the upslope edges of a watershed, small tributary streams (1st, 2nd and 3rd order) begin gathering water that flows downstream into larger rivers and eventually drains into a river, bay, or ocean. Some of...
Grade Level   6 7 8
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12
Published in 2016
Many things contribute to a healthy watershed. Certain land cover types like farm fields, cow pastures, sewage treatment plants and landfills are sources of nutrient and sediment pollution to streams. Rain falling on hot parking lots and rooftops in the summer delivers warm runoff water to streams....
Grade Level   6 7 8
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