[hoi dap] Bai nghe lop 9

Unit 7:Are you looking for a cheap, clean, effective source of power that doesn’t cause pollution or waste natural resources? Look no further than solar energy from our sun. At present, most of our electricity comes from the use of coal, gas, oil, or nuclear power. This power could be provided by the sun. One percent of the solar energy that reaches to the earth is enough to provide power for the total population. Many countries are already using solar energy. Solar panels are placed on the roof of a house and the sun’s energy is used to heat water. The energy can be stored for anumber of days, so on cloudy days you can use solar energy too.
Swede has an advanced solar energy program . There all buildings will be heated by so;ar energy and cars will use solar power instead of gas by the year 2015

Unit 9:If you live in an earthquake zone, you should take some time to look around your house. Place heavy books on the bottom shelf of your bookshelves. Block the rollers on your fridge and washing machine to prevent them from moving. Put hanging potted plants in plastic containers. Check the mirrors in your bathroom and bedroom. Make sure they can’t move. Don’t put your bed next to a window. Planning where you are going to be during an earthquake is very important. The first thing to remember is to stay inside. Then you should sit under a strong table or doorway, or stand in the corner of a room.

Unit 10: Good evening. Welcome to our Science for Fun Program. This week we’ve received a lot of questions asking about life on the moon. We’ve talked to some experts and this is what we’ve found out.
There is no water or air on the moon. It is all silent because there is no air. Of course there will be no music, no sound. There are no rivers and no lakes. At night it is very cold. The temperature goes down to 151 degrees C below zero. But during the day the temperature rises to 100 degrees C above zero.
There are great round holes on the moon. They look like big lakes. They are called craters. There are more than 30,000 craters on the moon. There are also high mountains. The highest mountains on the moon are about 26,000 feet or 8,000 meters high
And here is something very interesting to know: On the moon you weigh one sixth of what you weigh on earth. If you weigh 50 kilos, on the moon you will weigh only a little more than 8 kilos. You wiil be able to jump very high, even higher than an Olympic Champion. You can take a long step as well. And…maybe you won’t sleep very well because one day on the moon lasts for two weeks. So, is there life on the moon? I’ll leave the questions for you to answer yourself.
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