WHAT'S INCLUDED:

This lesson is aligned with NGSS Earth and Space Science: Middle School

Standard/ Disciplinary Core Ideas:

• The geologic time scale interpreted from rock strata provides a way to organize Earth’s history . Analyses of rock strata and the fossil record provide only relative dates, not an absolute scale. (MS-ESS1-4)

Task Cards Format: Multiple Choices with two (2) choices

1. What does the geologic time scale represent?
   Correct Answer - (Earth's history)
   
2. What are rock strata?
   Correct Answer - (Layers of sedimentary rock)
   
3. How do fossils help date rock layers?
   Correct Answer - (By their depth)
   
4. What is relative dating?
   Correct Answer - (Determining the age of a fossil compared to others)
   
5. What is an absolute date?
   Correct Answer - (A precise age)
   
6. Why are older rock layers typically found deeper underground?
   Correct Answer - (Law of Superposition)
   
7. What does the principle of original horizontality state?
   Correct Answer - (Rock layers are originally horizontal)
   
8. What is the principle of cross-cutting relationships?
   Correct Answer - (Younger features cut through older features)
   
9. How does the fossil record contribute to understanding Earth’s past?
   Correct Answer - (By showing evolutionary changes)
   
10. What technique involves comparing fossil content of different rock layers?
    Correct Answer - (Biostratigraphy)
    
11. What can disruptions in rock layers indicate?
    Correct Answer - (Geological events)
    
12. What is a key assumption in relative dating?
    Correct Answer - (All rocks contain fossils)
    
13. Why is the geologic time scale a useful tool?
    Correct Answer - (It organizes Earth’s history)
    
14. What can be inferred from matching rock layers in different locations?
    Correct Answer - (Similar age of layers)
    
15. What is the significance of unconformities in geology?
    Correct Answer - (They indicate periods of erosion or non-deposition)
    
16. What is used to give rocks an actual date or range in years?
    Correct Answer - (Radiometric dating)
    
17. How does tectonic activity affect rock strata?
    Correct Answer - (Can tilt, fold, or fault layers)
    
18. What role do index fossils play in dating rock layers?
    Correct Answer - (They indicate a very specific geological time)
    
19. How is the Law of Superposition used in relative dating?
    Correct Answer - (Older on bottom, younger on top)
    
20. What might cause an inconsistency in the rock layer sequence?
    Correct Answer - (A geological disturbance)
    
21. What do rock layers tell us about the environment when they were deposited?
    Correct Answer - (Historical climate and conditions)
    
22. What is the process of matching similar rock layers from different locations called?
    Correct Answer - (Correlation)
    
23. Why do scientists use more than one method to date rocks?
    Correct Answer - (To increase accuracy)
    
24. What evidence do unconformities provide?
    Correct Answer - (A history of erosion and deposition cycles)