Flashcards
Uses and hazards of radiation
Flashcards do conjunto (10)
- 1Why is carbon used for dating fossils? It has a large number of isotopes It has a small number of isotopes Living things are made from itCarbon is used for dating fossils because it has a large number of isotopes.
- 2Which ratio is used to date rocks? Uranium to lead Uranium to gold Uranium to thoriumThe ratio of uranium to lead is used to date rocks.
- 3As rocks become older what happens to the proportion of lead? It stays the same It decreases It increasesAs rocks become older the proportion of lead increases.
- 4What is the name given when ionising radiation is used to treat cancer? Chemotherapy Radiotherapy TracersRadiotherapy is the name of the treatment when ionising radiation is used to treat cancer.
- 5Cancers are formed when radiation collides with which part of a cell? RNA DNA MitochondriaCancers are formed when radiation collides with the DNA in our cells.
- 6Which is the most dangerous type of radiation inside our bodies? Gamma Beta AlphaAlpha radiation is the most dangerous type of radiation inside our bodies.
- 7Which are the most dangerous types of radiation outside our bodies? Gamma and beta Beta and alpha Alpha aloneGamma and beta radiation are the most dangerous type of radiation outside our bodies.
- 8What type of radioactive waste is mixed with concrete and put in a stainless steel drum in a purpose-built store? High Intermediate LowIntermediate level radioactive waste is mixed with concrete and put in a stainless steel drum in a purpose-built store.
- 9Which scientist or scientists actually tested the plum pudding model? Geiger and Marsden Rutherford DarwinGeiger and Marsden actually tested the plum pudding model. Rutherford designed the experiment.
- 10What is released when a neutron hits a uranium nucleus in nuclear fission? Daughter nuclei and two or three further neutrons Daughter nuclei and one neutron Daughter nuclei and two or three further electronsWhen a neutron hits a uranium nucleus in nuclear fission daughter nuclei and two or three neutrons are released