Year 9 - Science
Fossils and the rock cycle
Carbon cycle and climate change
Study Hub
Study Guides
This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit explores the rock cycle and the formation of igneous, sedimentary, and metamorphic rocks. It also examines the atmosphere's composition, human-induced carbon dioxide production, and its impact on climate. Focus is on interpreting data, identifying patterns, and presenting explanations.
Lesson Summary
You will learn to describe the formation of fossils and how the rock cycle affects our fossil record.
Key Notes
- Fossils are found in sedimentary rock, but not in other types of rock.
- Fossils are often the remains of living plants or animals.
- Bones buried in sedimentary rock can be very, very slowly dissolved by water and replaced by minerals in the water.
- Geological activities can break or completely destroy fossils.
Vocabulary To Learn
- fossil: The mineralised remains or impression of once–living organisms, or of traces left behind by organisms (e.g. skeletons, shells or impressions).
- mineral: An element or compound with a crystal–like structure. They are the 'building blocks' of rocks.
- sediment: A material deposited by water, wind or ice, such as pebbles or sand.
- sedimentary rock: A type of rock formed from the compression of sediments (rock fragments, minerals and remains of dead plants and animals).
- rock cycle: The gradual recycling of rocks over millions of years.
Common Mistakes To Avoid
- Pupils often interpret the rock cycle as the cause of rock formation.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Fossils are found in sedimentary rock, but not in other types of rock. Fossils are often the remains of living plants or animals.
2. Define this scientific word and use it in context. 'fossil'
The mineralised remains or impression of once–living organisms, or of traces left behind by organisms (e.g. skeletons, shells or impressions). Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Pupils often interpret the rock cycle as the cause of rock formation. Correction: Stress the rock cycle is a representation of relationships between the rock types. For rocks to change from one type to another requires specific conditions (i.e. igneous rock can change into metamorphic or melted into a different igenous rock).
More Lessons In This Unit
Browse all guides in the Year 9 Science guide library.