We will be learning random facts today, but it will only be a little bit of information on different topics. It is your responsibility to find out more on the topics that you find most interesting.
First a listening test. Listen to the video and complete the questions.
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- Why do we need to keep Earth clean?
- What are waste? Give a few examples.
- What can happen to the waste?
- What are biodegradable waste and non-biodegradable waste? Give examples of each.
- Why is pollution bad for Earth?
- Watch the rest of the video, listen carefully and then re-tell it in your own words, saying how we can help Earth.
Lets have a look at some random facts on different parts of Science.
- When the air gets heated and expands at a faster rate that the speed of sound, thunder will be created.
- Why do you actually loose weight when eating celery? It is not only because of the food, but it is also because of the chewing action where you are burning calories.
- Next time you are swimming, go under water and make a sound. Your friend will hear it very quickly and easily. Sound travels 4 times faster in water than in air.
- Do you not know if the cranberries are ripe enough to eat? Just bounce them on the table. What? Yes ripe cranberries are bouncy.
- If you travel in a car at 80km/h, half of the fuel that it uses goes towards overcoming wind resistance.
- The largest structure on Earth that is alive, is the Great Barrier Reef in Australia and it is more than 2000 kilometers long.
- The QWERTY keyboard which we find on computers and most cellphones were already invented in 1860.
- There are bamboo that can grow more than one meter per day.
- The light from the sun can shine for 80 meters deep into the ocean.
Now we are going have some fun with Science. Watch the video and try a few of these experiments.
