GCSE Science Revision Cards 0.0 / 5 ? ScienceGCSEOCR Created by: Lucy RobinsonCreated on: 14-05-13 22:24 What dose species mean? A Group of organisms that interbreed and produce fertile offspring. 1 of 15 Name the classification scale Kingdom - Phylum - Class - Order -Family - Genus - Species 2 of 15 Why do fertilizers need to be dissolved? So the substance is able to get into the roots. 3 of 15 Why do plants need nitrates? To make proteins. 4 of 15 What are the three things needed for rusting to happen? Oxygen, water and Iron. 5 of 15 What's the word equation for rusting? Iron + Oxygen + Water - hydrated iron oxide. 6 of 15 Name two chemicals which make household bleach. Sodium Hydroxide and Chlorine. 7 of 15 Explain why alpha radiation is used instead of gamma and beta. Alpha radiation is used because it's waves can be stopped by a thin piece of paper and stops further on in the air anyway, so it is less harmful. 8 of 15 Why can't plants take nitrogen directly from the air? Because it is UN-reactive 9 of 15 Why do scientist believe the tectonic theory? The plates move very slowly (2.5cm) each year. 10 of 15 Describe to consequences of 'Globe Warming'. 1) Melting polar icecaps 2) Rising Sea Levels 11 of 15 Which of the green house gasses is most significant? Water Vapour 12 of 15 Describe the effects ionisation can have on the human body. Mutations of DNA in cells and Cancer 13 of 15 How do you test for chlorine? Moist Litmus Paper 14 of 15 Explain why aluminium dose not corrode in moist air? Because it forms a thin layer of aluminium oxide 15 of 15
GCSE Biology B6- OCR 21st century Science Printable revision cards 5.0 / 5 based on 1 rating Teacher recommended
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