Earth's changing surface and fossil evidence are the focus of this Grade 7 science worksheet, which explores how scientists reconstruct Earth's history using fossils, sedimentary rock layers, and evidence of plate movement. Students examine how ancient organisms, geological structures, and the relative positions of rock layers reveal changes in Earth's surface over millions of years.

Designed for middle school Earth science, this resource connects geological observations with scientific reasoning. Students investigate why marine fossils found far inland can indicate a past marine environment, how the principle of superposition helps establish the relative ages of undisturbed sedimentary layers, and why folding, faulting, and other disturbances must be considered when interpreting geological evidence.

Explore the Evidence Behind Earth's History

The reading passage introduces the scientific ideas students need to interpret geological evidence. It explains how fossils provide clues about past organisms and environments, how sedimentary layers preserve a relative sequence of events, and how interactions between moving tectonic plates can form mountains, create ocean basins, and shift continents over long periods.

Students also examine how matching fossils, rock formations, and geological structures on continents now separated by oceans can support the conclusion that those landmasses were once connected. The resource emphasizes comparing independent lines of evidence rather than relying on a single observation.

What Students Practise

• Reading comprehension: Extract scientific information from a passage about fossils, rock layers, plate movement, and changes to Earth's surface.
• Multiple-choice questions: Apply geological concepts to questions about fossil evidence, marine environments, superposition, disturbed rock layers, tectonic plate interactions, and scientific investigations.
• True-or-false statements: Evaluate claims about fossils, relative rock ages, geological disturbances, continental connections, and the use of independent evidence.
• Short-answer responses: Explain what marine fossils reveal about past environments, describe how superposition establishes relative ages, and identify independent evidence supporting connections between continents.
• Visual and classification activities: Apply the worksheet's labeled diagram and categorization tasks to the lesson content.
• Scientific reflection: Complete a short-note activity and use the dedicated student notes lines to record observations or questions.

Included for Teachers and Students

• Science worksheet covering evidence for changes in Earth's surface and geological history.
• Separate answer key PDF for checking student responses.
• Teacher guide included in the answer key PDF, with learning objectives, teaching tips, discussion questions, and common mistakes.
• Student notes lines at the bottom of the worksheet for recording additional thoughts or questions.

The separate answer key and teacher guide make this resource useful for planning instruction, reviewing student work, and preparing follow-up discussions about how scientists interpret geological evidence. Teachers can use the reading passage to introduce the topic, assign the activities for individual practice, or revisit the questions during a class review.

Classroom Use

Use this Grade 7 Earth science practice resource when teaching fossils, sedimentary rock layers, the principle of superposition, tectonic plate movement, and evidence of past continental connections. It also provides opportunities to reinforce evidence-based explanations and careful interpretation of scientific observations.

With a combination of explanatory reading, knowledge checks, written reasoning, and visual activities, students practise connecting geological evidence to conclusions about Earth's past. The accompanying teacher guidance and separate answer key provide additional support for preparing lessons and reviewing the concepts students need to apply.