By Robert Gardner
Solids, beverages, and gasesoh my! study all in regards to the states of subject and basic actual ideas with the thrill technology experiments during this booklet. discover in case you could make water movement upward, if carbon dioxide is heavier than air, and extra! Many experiments contain principles scholars can use for his or her technological know-how reasonable.
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Extra info for Ace Your Physical Science Project: Great Science Fair Ideas (Ace Your Physics Science Project)
Pour known volumes of water from a graduated cylinder or metric measuring cup into the graduated cylinder you made. Be sure you use the bottom of the curved meniscus (see Figure 6) to measure the volume. Water adheres to glass or plastic so that a thin ring of water in contact with the glass rises higher than the rest of the water. The actual volume of the water is below the bottom of the meniscus. How closely does the volume measured in the commercial graduated cylinder agree with the volume as measured in your homemade one?
Which liquid is on top? How do the densities of water, cooking oil, and alcohol compare? How can you determine the actual density of these liquids? In a small, tall jar, make three liquid layers, one atop the other, using water, cooking oil, and molasses. Which is the densest of these three liquids? Which is the least dense? Do you think any of the layers will eventually merge? Leave the jar for a few days. Was your prediction correct? 4 Exploring Emulsions Materials: small jar with a screw-on lid vinegar cooking oil egg table knife bowl Find a small jar with a screw-on lid that is taller than it is wide.
Your weight is the force with which gravity pulls on you. Newtons are the units used to measure force. If your mass is 50 kg, you will weigh nearly 500 newtons (N) (110 pounds) on Earth. Any mass of 50 kg will weigh nearly 500 N on Earth. On the moon, where gravity is weaker, you would weigh only about 80 N (18 pounds), but your mass would still be 50 kg. There is no less of you on the moon than on Earth, but the Moon does not pull as hard on you as Earth does. Since all the experiments in this book are to be done on Earth, the difference between mass and weight will not usually be important.