Test # 9
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1300 questions in 130 tests. Each test contains 10 questions.
Idiom of the Day
able to breathe easily again
to be able to relax and recover from a stressful time or event
My friend was able to breathe easily again when his company did not go bankrupt.
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Science Experiments Ideas
Connect a torch bulb with a battery by means of a pair of scissors and a pencil. The bulb lights up.From the long tongue of the battery, the negative pole,the current flows through the metal of the scissors to the lamp. It makes it glow, and flows through the graphite shaft to the positive pole of the battery. Therefore graphite is a good conductor so much electricity flows even through a pencil lead on paper, that you can hear crackling in earphones.