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Learn the common causes of household odors.
Science | Topics
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Visit the South Carolina Department of Education for Science standards.
Take a quick look at all Science series on Knowitall.org
Interactive
Grades
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As you take a deep sniff, the odor particles in the air flow back to the top of your nose. Learn more about the sense of smell in the simulation.
Interactive
Grades
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The Sun is a natural source of visible light waves. Our eyes see the reflection of the sunlight off the objects around us. Check out the simulation to learn more about scattering light.
Interactive
Grades
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In the activity, choose a color to find out why objects appear in a particular color.
Interactive
Grades
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The Earth is surrounded by a thin envelope of gases called the atmosphere. More than 500 active volcanoes erupt around the world affecting the Earth's atmosphere and global climate.
Interactive
Grades
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These brain teasers can help you develop your creative thinking, an important skill for inventors. Try out the brain teaser game.
Interactive
Grades
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Use the arrows to scroll the timeline to discover inventions. Click on an event for more details.
Interactive
Grades
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Play a science word jumble game. Scramble the word jumbles by dragging each letter into the appropriate box.
Interactive
Grades
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Watch the simulation to learn the parts of an airplane.
Interactive
Grades
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How does weight affect an airplane? Watch the simulation.