revision prep 2 session 1
Quiz by Mai Mohamed Elwazeer
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8 questions
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- Q1Traces and remains of old living organisms that are preserved in the sedimentary rocks.extinctionaurorafossils20s
- Q2Dinosaur's tooth from……………fossilscastpetrifiedmold20s
- Q3Ozone hole appears over the ..........................equatormiddle eastsouth pole20s
- Q4ozone layer allows 100% of the ......................UV rays to penetrate the Earth 's atmosphere .nearfarmedium20s
- Q5pilots prefer to fly their planes in the lower part of stratosphere because ........................no clouds exist and air move horizontallythere are weather disturbancesthere is no traffic20s
- Q6the snow crystal has ....................shape.octagonalhexagonalpentagonal10s
- Q7alkali metals are considered from ........................block groups .SPDF20s
- Q8the atomic radius is used as a measurement of the atomic size of the atom and its measuring unit is ............meterpicometremillimeternanometer20s
