Gr 9 NATURAL SCIENCES: CH 3.6 Nuclear power in South Africa
60 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary process used to generate electricity in a nuclear power station?

  • Nuclear reaction
  • Radioactive decay
  • Nuclear fusion
  • Nuclear fission (correct)

What is the term for the process of splitting a heavy atomic nucleus into two smaller nuclei?

  • Nuclear fusion
  • Nuclear fission (correct)
  • Radioactive decay
  • Nuclear reaction

What is the byproduct of nuclear fission?

  • Energy and radiation (correct)
  • Energy and heat
  • Energy and water
  • Energy and gas

What is the term for the spontaneous emission of particles from unstable atomic nuclei?

<p>Radioactive decay (B)</p> Signup and view all the answers

What is the name of the commercial nuclear power station located in Cape Town?

<p>Koeberg Power Station (A)</p> Signup and view all the answers

What is the term for the energy produced from controlled nuclear reactions?

<p>Nuclear power (C)</p> Signup and view all the answers

What is the process of combining two light atomic nuclei to form a heavier nucleus?

<p>Nuclear fusion (B)</p> Signup and view all the answers

What is the center of an atom called?

<p>Nucleus (D)</p> Signup and view all the answers

When did nuclear power become feasible for electricity generation?

<p>Early 20th century (C)</p> Signup and view all the answers

What is the definition of radioactive?

<p>Emitting radiation as a result of the decay of atomic nuclei (D)</p> Signup and view all the answers

What is the primary fuel used in nuclear power stations?

<p>Uranium (A)</p> Signup and view all the answers

What is the purpose of control rods in a nuclear reactor?

<p>To regulate the fission process (C)</p> Signup and view all the answers

What is the function of the steam generator in a nuclear power plant?

<p>To boil water and produce steam (A)</p> Signup and view all the answers

What is the main advantage of nuclear power in terms of energy production?

<p>High energy density (A)</p> Signup and view all the answers

What is a major disadvantage of nuclear power?

<p>Radioactive waste (B)</p> Signup and view all the answers

What is the purpose of the cooling system in a nuclear power plant?

<p>To ensure the reactor and other components remain at safe operating temperatures (C)</p> Signup and view all the answers

What was the consequence of the Fukushima-Daiichi disaster in 2011?

<p>A release of radiation and a partial meltdown (B)</p> Signup and view all the answers

What is the purpose of the containment structure in a nuclear power plant?

<p>To prevent radiation leakage (C)</p> Signup and view all the answers

What is a characteristic of nuclear power plants compared to some renewable energy sources?

<p>Reliability (A)</p> Signup and view all the answers

What is a safety measure in nuclear power plants?

<p>Continuous monitoring and safety protocols (A)</p> Signup and view all the answers

What is the main reason why uranium is used as the primary fuel in nuclear power stations?

<p>Its ability to undergo fission and slow radioactive decay (D)</p> Signup and view all the answers

What is the purpose of the turbine in a nuclear power plant?

<p>To generate electricity (C)</p> Signup and view all the answers

What is a major advantage of nuclear power generation compared to fossil fuels?

<p>Lower greenhouse gas emissions (D)</p> Signup and view all the answers

What is a major challenge associated with nuclear power?

<p>Radioactive waste disposal (B)</p> Signup and view all the answers

What is the primary function of the containment structure in a nuclear power plant?

<p>To prevent radiation leakage (B)</p> Signup and view all the answers

What is a characteristic of nuclear power plants compared to some renewable energy sources?

<p>Reliability (A)</p> Signup and view all the answers

What was the consequence of the Fukushima-Daiichi disaster in 2011?

<p>A partial meltdown and release of radiation (B)</p> Signup and view all the answers

What is the purpose of monitoring in nuclear power plants?

<p>To protect workers and the environment from radiation exposure (A)</p> Signup and view all the answers

What is a characteristic of the fuel used in nuclear power stations?

<p>High energy density (D)</p> Signup and view all the answers

What is the purpose of the cooling system in a nuclear power plant?

<p>To ensure safe operating temperatures (B)</p> Signup and view all the answers

What occurs during the process of nuclear fission?

<p>A heavy atomic nucleus splits into two smaller nuclei, releasing energy (D)</p> Signup and view all the answers

What is the purpose of a nuclear power station?

<p>To harness the energy from nuclear fission to produce electricity (C)</p> Signup and view all the answers

What is the result of radioactive decay?

<p>The transformation of an unstable nucleus into a different element (B)</p> Signup and view all the answers

Why did researchers find nuclear power to be practical for electricity generation?

<p>Because the discovery of nuclear fission made it possible to harness energy from radioactive materials (B)</p> Signup and view all the answers

What is the main component of an atom that determines its identity?

<p>Protons (D)</p> Signup and view all the answers

What is the term for the energy released from the decay of atomic nuclei?

<p>Radioactive energy (A)</p> Signup and view all the answers

What is the purpose of the nucleus in an atom?

<p>To contain protons and neutrons (D)</p> Signup and view all the answers

What is a characteristic of unstable atomic nuclei?

<p>They spontaneously emit particles, releasing radiation (C)</p> Signup and view all the answers

What is the significance of the discovery of nuclear fission in the 1930s?

<p>It made nuclear power practical for electricity generation (A)</p> Signup and view all the answers

What is the role of protons in an atom?

<p>To determine the identity of an element (D)</p> Signup and view all the answers

What is the primary reason why uranium is used as the primary fuel in nuclear power stations?

<p>Its slow radioactive decay (D)</p> Signup and view all the answers

What is the purpose of the containment structure in a nuclear power plant?

<p>To prevent radiation leakage (B)</p> Signup and view all the answers

What is a major challenge associated with nuclear power?

<p>Radioactive waste disposal (B)</p> Signup and view all the answers

What is the advantage of nuclear power compared to fossil fuels?

<p>Minimal greenhouse gas emissions (D)</p> Signup and view all the answers

What is the purpose of the turbine in a nuclear power plant?

<p>To drive the generator (B)</p> Signup and view all the answers

What is the result of a nuclear meltdown?

<p>A release of radioactive materials (B)</p> Signup and view all the answers

What is the purpose of monitoring in nuclear power plants?

<p>To detect radiation leaks (D)</p> Signup and view all the answers

What is a characteristic of nuclear fuel?

<p>High energy density (C)</p> Signup and view all the answers

What is the consequence of not having a cooling system in a nuclear power plant?

<p>Uncontrolled fission reaction (B)</p> Signup and view all the answers

What is the primary function of control rods in a nuclear reactor?

<p>To regulate the fission reaction (C)</p> Signup and view all the answers

What is the primary reason why nuclear power stations use nuclear fission instead of nuclear fusion?

<p>Nuclear fission is currently more technologically feasible than nuclear fusion. (D)</p> Signup and view all the answers

What is the result of the radioactive decay of an unstable nucleus?

<p>The nucleus transforms into a different element. (C)</p> Signup and view all the answers

What is the role of neutrons in an atomic nucleus?

<p>They have no significant role in the nucleus. (C)</p> Signup and view all the answers

Why is nuclear power considered a viable alternative to fossil fuels?

<p>It generates less greenhouse gas emissions than fossil fuels. (B)</p> Signup and view all the answers

What is the purpose of the nucleus in an atom?

<p>To determine the identity of the element. (C)</p> Signup and view all the answers

What is a characteristic of radioactive materials?

<p>They emit radiation spontaneously. (B)</p> Signup and view all the answers

What is the significance of the discovery of nuclear fission in the 1930s?

<p>It enabled the harnessing of nuclear energy for electricity generation. (C)</p> Signup and view all the answers

What is the primary component of an atom that determines its chemical properties?

<p>Protons. (B)</p> Signup and view all the answers

What is the term for the energy released from the decay of atomic nuclei?

<p>Nuclear energy. (D)</p> Signup and view all the answers

Why did researchers find nuclear power to be practical for electricity generation?

<p>Because radioactive materials release substantial energy upon decaying. (A)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Browser