You can do this in plastic tubs so they are easy to observe, in a bathtub or in any body of water near you. This is so much fun to watch. Some will tip over and some will stay upright depending on the shape. As they melt, they will rotate in the water, too. We made a few ...
Consider a pencil partially immersed in a cup of water. Looking from above, why does the pencil appear to be bent? Particles of camphor move around on the surface of water. Why? Logs dropped upright into a pond do not remain upright, but float "flat" in the water. Why is it so, ex...
How would another ice age affect the water cycle? Why is the top layer of the ocean the warmest? Why does water tend to sink near Arctic regions? Why do ice shelfs float? Why does warm soda go flat faster than chilled soda? Why is the glacial lake Agassiz important in the climate sys...
It is easier to float in the ocean than it is to float in a swimming pool. Do you know why? Ocean water is full of salt— and salt water can hold up more weigh than fresh water. See for yourself! You Will Need: ● 3 cups of warm water ...
Why don't we go together? 我们为什么不一起去呢? 牛津词典 Why Jane, it's you! 呦,简,是你呀! 牛津词典 Why, it's easy─a child could do it! 嗨,这容易得很,连小孩子都干得了! 牛津词典 I had no intention of going into the whys and the wherefores of the situation. 我无意深入调查...
Katharina: No salt is heavier than water. It's too heavy to evaporate and float up into the sky. So salt gets left behind in the ocean and just the fresh water vapor rises out of it. Nij: So where are we headed? Katharina: The clouds!
Due to salt's density, items float higher in the water. You can do this experiment with things you'll find around the house, and it's fun too. You'll keep bobbing along if you explore buoyancy! It's the perfect day for a daydream....
If you mix oil and water together, the mixture contains two liquid phases because the oil will float on top of the water because of the oil's lower density. They are not going to mix together like alcohol and water do. You can see the boundary between them and in fact, they are mech...
The fresh water will remain on top. The potato is heavier than the fresh water, but it is lighter than the salt water. That is why the potato will sink halfway down. 1.In which step of the experiment do you add the salt? A. Step 1. B. Step 2....
Why Do Raindrops Fall? A series of twenty non-fiction science readers which engages children in the world around them. Why is the sea salty? Why do boats float? Why do I feel thirsty? You can find the answers to these and other questions about water and weathe... P Rees 被引量: 0...