Question 19 When a uranium atoms splits in two, a few stray neutrons are produced. If these neutrons can induce the splitting of more uranium atoms, a chain reaction results. In order to facilitate this, a nuclear reactor contains __i__which slows the Answer neutrons down. __ii__ is/are used to determine how many of these stray neutrons can continue the chain reaction. saved Marked out The statements above are completed correctly by the information in row 5 of 1.0 Select one: T decel Hlandri question a. adecelerator; A callandria b. a moderator; A callandria c. adecelerator; Control rods d. amoderator; Control rods Question 20 The energy transformations that take place within a nuclear reactor are Answer saved Select one: Marked out a. nuclear to thermal to electrical ofil' b. thermal to nuclear to kinetic to electrical rFlag c. nuclear to thermal to kinetic to electrical question d. thermal to nuclear to thermal to kinetic to electrical Question 21 In a CANDU nuclear reactor, _i__ in a process known as _ii__ Answer saved The statement above is completed correctly by the information in row : Marked out of 1.0 Select one: Flag a. small nuclei are joined together; nuclear fission question b. large nuclei are split apart; nuclear fission c. small nuclei are joined together; nuclear fusion d. large nuclei are split apart; nuclear fusion Question 22 Fusion reactors aren't yet developed. The main reason why is Answer saved Select one: Marked out a. there isn't a steady source of fuel. of 1.0 b. the technology is too difficult. Ghad c. there is no interest in these. question d. there isn't a good location for one. Qilestion 23 Most of the geothermal heat we use comes from . The best places on earth to take advantage of geothermal energy are __ii__. Answer saved The statements above are completed correctly by the information in row __. Marked out of 1.0 Select one: Flag a. radioactive decay; volcanic areas question b. radioactive decay; mountainous areas c. natural cooling of the Earth; volcanic areas d. natural cooling of the Earth; mountainous areas Question 24 A good location for a power station is near a population centre because __i_ and near a source of fuel because __ii__. Answer saved The statement above is completed correctly by the information in row . Marked out of 1.0 Select one: Flag a. communiting to work is easier; transportation costs are lower question b. the customers are nearby; transportation costs are lower c. commuting to work is easier; it's easier to turn raw material into fuel d. the customers are nearby; it's easier to turn raw material into fuel