Before going outside in the morning, many of us check a window thermometer (温度计) for the temperature. This helps us decide what to wear. __36__ We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. If we don't feel well, we use a thermometer to see if we have a fever. We keep our rooms a certain warmth in the winter and a certain coolness in the summer.
Not all the thermometers use the same system to measure temperature. We use a system called the Fahrenheit scale. But most other countries use the Centigrade scale. Both systems use the freezing and boiling points of water as their guide. __37__
The most common kind of thermometer is made with mercury (水银) inside a clear glass tube. As mercury (or any other liquid ) becomes hot, it expands. As it gets colder, it contracts (收缩). That is why on hot days the mercury line is high in the glass tube. __38__
First. Take a clear glass juice bottle that has a cap; fill the bottle with coloured water. Tap a hole in the center of the cap using a hammer and thick nail. Put the cap on the jar. Then stick a plastic straw (吸管) through the nail hole. __39__
Finally. Place a white card on the outside of the bottle and behind the straw. Now you can see the water lever easily. __40__
As the temperature goes down, the water will contract, and the lever in the straw will come down. Perhaps you will want to keep a record of the water lever in the straw each morning for a week.
A.We use and depend on thermometers to measure the temperature of many other things in our daily lives.
B.Thermometers measure temperature, by using materials that change in the same way when they are heated or cooled.
C.Now that you know this rule you can make a thermometer of your own that will work.
D.The water will rise in the straw. As the temperature of the air goes up, the water will expand and rise even higher.
E.They label these in different ways. On the Fahrenheit scale water freezes at 32 degrees and boils at 212 degrees. On the Celsius scale water freezes at 0 degrees and boils at 100 degrees.
F.Take wax (you may use an old candle if you have one) and melt some of it right where the straw is struck into the cap to seal (把……粘住) them together.
G.People use thermometers which are made by themselves when travelling around the world.
AECFD
2017届浙江省高考英语一轮复习基础晨记:必修2 Unit 3《Computers》
2017届浙江省高考英语一轮复习基础晨记:选修7 Unit 5《Travelling abroad》
2017届浙江省高考英语一轮复习基础晨记:选修7 Unit 3《Under the sea》
2017届浙江省高考英语一轮复习基础晨记:必修4 Unit 5《Theme parks》
2017届高考英语一轮课时跟踪检测:(三)《Travel journal》(人教版必修1)
2017届浙江省高考英语一轮复习基础晨记:选修8 Unit 1《A land of diversity》
2017届高考英语一轮课时跟踪检测:(三十六)《A land of diversity》(人教版选修8)
2017届浙江省高考英语一轮复习基础巩固:必修1 Unit 5《Nelson Mandela—a modern hero》
2017届浙江省高考英语一轮复习基础巩固:必修1 Unit 4《Earthquakes》
2017届浙江省高考英语一轮复习基础晨记:选修8 Unit 4《Pygmalion》
2017届高考英语一轮课时跟踪检测:(三十一)《Living well》(人教版选修7)
2017届浙江省高考英语一轮复习基础晨记:必修1 Unit 3《Travel journal》
2017届浙江省高考英语一轮复习基础晨记:必修1 Unit 2《English around the world》
2017届浙江省高考英语一轮复习基础晨记:选修7 Unit 1《Living well》
2017届浙江省高考英语一轮复习基础晨记:必修2 Unit 4《Wildlife protection》
2017届浙江省高考英语一轮复习基础晨记:选修6 Unit 4《Global warming》
2017届高考英语一轮课时跟踪检测:(三十八)《Inventors and inventions》(人教版选修8)
2017届高考英语一轮课时跟踪检测:(三十三)《Under the sea》(人教版选修7)
2017届高考英语一轮课时跟踪检测:(四十)《Meeting your ancestors》(人教版选修8)
2017届浙江省高考英语一轮复习基础晨记:必修3 Unit 5《Canada—“The True North”》
2017届高考英语一轮课时跟踪检测:(二十九)《Global warming》(人教版选修6)
2017届浙江省高考英语一轮复习基础晨记:必修3 Unit 2《Healthy eating》
2017届高考英语一轮课时跟踪检测:(三十二)《Robots》(人教版选修7)
2017届浙江省高考英语一轮复习基础晨记:选修8 Unit 3《Inventors and inventions》
2017届浙江省高考英语一轮复习基础晨记:必修2 Unit 5《Music》
2017届浙江省高考英语一轮复习基础晨记:必修3 Unit 4《Astronomy the science of the stars》
2017届浙江省高考英语一轮复习基础晨记:选修8 Unit 2《Cloning》
2017届高考英语一轮课时跟踪检测:(二十八)《A healthy life》(人教版选修6)
2017届浙江省高考英语一轮复习基础晨记:选修7 Unit 4《Sharing》
2017届高考英语一轮课时跟踪检测:(三十五)《Travelling abroad》(人教版选修7)
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