4.3 Revision Notes & Videos
It’s important to remember that an examination is a test of learning, not memory. Examiners want to see evidence that you have drawn on your knowledge to develop a reasoned argument, rather than replicate course notes and textbook facts. Revision should be a process of consolidating understanding rather than cramming as much information as possible before the morning of the exam.
Topics studied in 21st Century Science are:
Module P1: The Earth in the Universe
• What do we know about the Earth and Space?
• How have the Earth’s continents moved, and with what consequences?
• What is known about stars and galaxies?
• How do scientists develop explanations of the Earth and Space?
BBC - GCSE Bitesize Website- The Earth in the Universe
Module P2: Radiation and Life
• What types of electromagnetic radiation are there? What happens when radiation hits an
• Which types of electromagnetic radiation harm living tissue and why?
• How does electromagnetic radiation make life on Earth possible?
• What is the evidence for global warming? Why might it be occurring, and how serious a threat
• What ideas about risk do citizens and scientists use?
BBC - GCSE Bitesize Website- Radiation and life
Module P3: Radioactive Materials
• Why are some materials radioactive?
• How can radioactive materials be used and handled safely, including wastes?
• How can electricity be generated? What can be done with nuclear wastes?
• What are the health risks from radioactive materials?
BBC - GCSE Bitesize Website- Radioactive materials