Materials needed:<\/p>\n
- \n
- glass with water 2\/3 full<\/li>\n
- pencil<\/li>\n<\/ul>\n
Procedure:<\/p>\n
Place a pencil in the water, placing it so that it is tipped to one side.\u00a0 Look through the front of the glass and notice that the pencil is bent.<\/p>\n
The science behind it:<\/p>\n
Light \u201cbends\u201d when it passes though one substance to another of a different density.\u00a0 The light is first travelling through the air, and then it passes through the water.\u00a0 Since the water is more dense than the air, the light rays bend in the water.\u00a0 This makes the pencil seem to bend as well.\u00a0 The process of light bending is called refraction.<\/p>\n
2.\u00a0 Rainbow light experiment<\/strong><\/p>\n
Materials needed:<\/p>\n
- \n
- Glass of water<\/li>\n
- piece of white paper<\/li>\n
- full sunlight<\/li>\n<\/ul>\n
Procedure:<\/p>\n
Place a glass of water in direct sunlight. Hold the white paper below the glass.\u00a0 Look for the rainbow!<\/p>\n
The science behind it:<\/p>\n
Rainbows are formed when light passes through water droplets.\u00a0 As the light comes through, it is refracted, just like in the bending pencil experiment above. \u00a0As a result, the light separates into its different colors, which forms the rainbow.<\/p>\n
3. Oil vs. water experiment<\/strong><\/p>\n
Materials needed:<\/p>\n
- \n
- glass or bottle<\/li>\n
- water<\/li>\n
- vegetable oil or a similar cooking oil<\/li>\n
- dishwashing liquid<\/li>\n<\/ul>\n
Procedure:<\/p>\n
Pour water into the glass.\u00a0 Pour vegetable oil into the glass.\u00a0 Observe what happens.\u00a0 (The vegetable oil and water separate into layers.) Add dishwashing liquid and stir.\u00a0 Observe what happens.<\/p>\n
The science behind it:<\/p>\n
Water and oil are both made up of molecules that are strongly attracted to each other.\u00a0 Water molecules have a positive charge on one end and a negative charge on the other end.\u00a0 Since the opposite ends of the molecule have different charges, it is called a polar molecule.\u00a0 The molecules in the oil are more evenly spaced out, and therefore do not have charges on the opposite ends of the molecule.\u00a0 These are called non-polar molecules.\u00a0 Since the water and oil molecules are different types, they do not mix.\u00a0 When the dishwashing liquid is added, it causes the bonds between the molecules to change, and allows the liquids to mix.<\/p>\n
4. Which holds more? volume experiment<\/strong>\u00a0<\/strong><\/em><\/p>\n
Materials needed:<\/p>\n
- \n
- large measuring cup filled with water<\/li>\n
- short and tall glasses of different volumes<\/li>\n<\/ul>\n
*Note:\u00a0 This activity works best with a tall, thin glass\/vase as well as a short, fat glass.\u00a0 I check the volumes ahead of time to make sure the volume of the short glass is more than the tall vase.<\/p>\n
Procedure:<\/p>\n
Show children\u00a0the short and tall glasses.\u00a0 Let them choose which they believe will hold the most water.\u00a0 (They almost always choose the tall, thin glass.)\u00a0 Pour the water into this glass.\u00a0 Since they chose the glass that they believe holds the most water, remind them that if you pour the water from their glass to the other glass, the water should fill the other glass and still have water left in their glass.\u00a0 Pour the water into the second glass to test their hypothesis that their chosen container holds the most water.<\/p>\n
The science behind the experiment:<\/p>\n
Most children\u00a0think that the taller the glass, the more water it must hold.\u00a0 This is not always the case, especially if it is tall and thin.\u00a0 This simple experiment shows that you cannot determine the volume based on the height of an object.<\/p>\n
5. Surface Tension experiment<\/strong>\u00a0<\/em><\/p>\n
Materials needed:<\/p>\n
- \n
- glass<\/li>\n
- measuring cup filled with water<\/li>\n
- eyedropper<\/li>\n<\/ul>\n
Procedure:<\/p>\n
Pour water into the glass, filling it to the brim.\u00a0 With the eyedropper, carefully add additional water to the glass.\u00a0 Continue to add water until it over flows. Observe the surface of the water and watch it bulge above the top of the glass.<\/p>\n
The science behind it:<\/p>\n
As I mentioned in the oil vs. water experiment, water is a polar molecule.\u00a0 This makes the water molecules stick together with a very strong bond.\u00a0 The surface of the water bulges upward with each drop of water, until the molecules can no longer stick together at the top of the glass.\u00a0 This is called surface tension.\u00a0 You can also try this experiment with dropping pennies into the glass, to see how many pennies you can add, before it the water spills over the edge.\u00a0 Likewise, you can also try it with other liquids.\u00a0 Rubbing alcohol is a good liquid to try, as it does not have a high surface tension value like water does.<\/p>\n
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<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"In Nursery children have shown interest in investigating water. We are investigating where water comes from, taps, rivers, sea and clouds. We are exploring the properties of water, \u00a0solid, liquid, gas, ice , water and steam. We are also discovering what we use water for, drinking, washing and swimming. Why not experiment at home, with … Continue reading Investigating Water<\/span><\/a><\/p>\n","protected":false},"author":15213,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[102528],"tags":[],"class_list":["post-1551","post","type-post","status-publish","format-standard","hentry","category-information-updates"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/wl\/KnightsridgeEYC\/wp-json\/wp\/v2\/posts\/1551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/wl\/KnightsridgeEYC\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/wl\/KnightsridgeEYC\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/wl\/KnightsridgeEYC\/wp-json\/wp\/v2\/users\/15213"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/wl\/KnightsridgeEYC\/wp-json\/wp\/v2\/comments?post=1551"}],"version-history":[{"count":5,"href":"https:\/\/blogs.glowscotland.org.uk\/wl\/KnightsridgeEYC\/wp-json\/wp\/v2\/posts\/1551\/revisions"}],"predecessor-version":[{"id":1558,"href":"https:\/\/blogs.glowscotland.org.uk\/wl\/KnightsridgeEYC\/wp-json\/wp\/v2\/posts\/1551\/revisions\/1558"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/wl\/KnightsridgeEYC\/wp-json\/wp\/v2\/media?parent=1551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/wl\/KnightsridgeEYC\/wp-json\/wp\/v2\/categories?post=1551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/wl\/KnightsridgeEYC\/wp-json\/wp\/v2\/tags?post=1551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"