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Science 8th Grade Ages 13–14
8th Grade Science — Earth Systems — Earth's Layers Were Deduced, Not Drilled A free 1-page hands-on science activity for 8th Grade (ages 13–14). It practices science, observation, inquiry. Download the PDF with no account and no email.
Free printable earth's layers were deduced, not drilled science worksheet. The deepest borehole ever drilled reached about 12 km, barely scratching the crust, so the layered picture of Earth's interior comes entirely from how earthquake waves bend and stop. Wave speed jumps sharply at the Mohorovičić discontinuity, fixing the crust-mantle boundary; the S wave shadow zone fixes the outer core as liquid. Density rises from roughly 2.7 g/cm³ in continental crust to about 13 g/cm³ in the inner core, and that gradient is the fingerprint of a planet that sorted itself while molten. Part of the Earth Systems lesson track. For 8th Grade Science (ages 13–14).
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Lab Report — Earth's Layers Were Deduced, Not Drilled SCIENCE · 8TH GRADE Name Date Complete this lab report for your investigation. Purpose / Research Question: What are the different layers/features of Earth? Materials: globe or map, clay (optional), colored pencils Hypothesis (If... then... because...): Write your own: If I change ___, then ___ because ___ Independent Variable: Feature of Earth being studied Dependent Variable: Characteristics and location Procedure: 1. Look at a globe or map 2. 3. Identify mountains, rivers, oceans 4. 5. Record what you learned Data / Results: Feature Land or Water? Description Mountain Ocean River Conclusion: Earth's surface has... The biggest feature is... www.littleactivity.com 8th Grade · Science
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Lab Report — Earth's Layers Were Deduced, Not Drilled SCIENCE · 8TH GRADE Name Date Complete this lab report for your investigation. Purpose / Research Question: What are the different layers/features of Earth? Materials: globe or map, clay (optional), colored pencils Hypothesis (If... then... because...): Write your own: If I change ___, then ___ because ___ Independent Variable: Feature of Earth being studied Dependent Variable: Characteristics and location Procedure: 1. Look at a globe or map 2. 3. Identify mountains, rivers, oceans 4. 5. Record what you learned Data / Results: Feature Land or Water? Description Mountain Ocean River Conclusion: Earth's surface has... The biggest feature is... www.littleactivity.com 8th Grade · Science
Coding — If & Then — Part 1 SCIENCE · 1ST GRADE Name Date Learn the concept, study the code, then try the challenge! Coding Concepts Coding means writing instructions that a computer can follow step by step. Code Example: // Every program has: // 1. Input — data going in // 2. Process — what to do with it // 3. Output — the result Steps: 2. Plan your solution (algorithm) 5. Debug and improve 3. Write the code 1. Understand the problem 4. Test your code Try It! Write step-by-step instructions to make a peanut butter sandwich. Be specific! Debug Challenge: Your instructions say 'put peanut butter on bread' but the robot puts the jar on the bread! R… My Fix: www.littleactivity.com 1st Grade · Science
Coding — Events — Part 1 SCIENCE · 1ST GRADE Name Date Learn the concept, study the code, then try the challenge! Events & Control Events start your code. Control blocks like loops and if/then make decisions. Code Example: when [space v] key pressed if <touching [edge v]?> then turn (180) degrees end repeat (10) move (10) steps end Steps: 5. Test different event triggers 4. Try 'when key pressed' events 3. Use 'if...then' to check conditions 1. Start with a 'when green flag clicked' event 2. Add a 'forever' loop to keep code running Try It! Make a sprite bounce off the edges using events and if/then blocks. Debug Challenge: My sprite only moves once instead of forever. What's wrong? My Fix: www.littleactivity.com 1st Grade · Science
Coding — Safe & Kind — Part 1 SCIENCE · 1ST GRADE Name Date Learn the concept, study the code, then try the challenge! Coding Concepts Coding means writing instructions that a computer can follow step by step. Code Example: // Every program has: // 1. Input — data going in // 2. Process — what to do with it // 3. Output — the result Steps: 5. Debug and improve 2. Plan your solution (algorithm) 4. Test your code 1. Understand the problem 3. Write the code Try It! Write step-by-step instructions to make a peanut butter sandwich. Be specific! Debug Challenge: Your instructions say 'put peanut butter on bread' but the robot puts the jar on the bread! R… My Fix: www.littleactivity.com 1st Grade · Science
Coding — Variables — Part 1 SCIENCE · 1ST GRADE Name Date Fill in this page as you do your investigation. What are we finding out? What are variables and how do they store data? What we need: computer, code editor, practice exercises What I think will happen: Write your own: If I change ___, then ___ because ___ What I will change: Variable name and value assigned What I will watch: What the program outputs using the variable What to do: 1. Learn what a variable is 2. Create a variable and assign a value 3. Use the variable in your program 4. Change the value and observe 5. Try different data types What we saw: Variable Name Value Data Type score name Trial 3 What I learned: Variables are useful because... www.littleactivity.com 1st Grade · Science
Coding — If & Then — Part 1 SCIENCE · 2ND GRADE Name Date Learn the concept, study the code, then try the challenge! Coding Concepts Coding means writing instructions that a computer can follow step by step. Code Example: // Every program has: // 1. Input — data going in // 2. Process — what to do with it // 3. Output — the result Steps: 2. Plan your solution (algorithm) 5. Debug and improve 3. Write the code 1. Understand the problem 4. Test your code Try It! Write step-by-step instructions to make a peanut butter sandwich. Be specific! Debug Challenge: Your instructions say 'put peanut butter on bread' but the robot puts the jar on the bread! R… My Fix: www.littleactivity.com 2nd Grade · Science
Coding — Lists — Part 1 SCIENCE · 2ND GRADE Name Date Learn the concept, study the code, then try the challenge! Coding Concepts Coding means writing instructions that a computer can follow step by step. Code Example: // Every program has: // 1. Input — data going in // 2. Process — what to do with it // 3. Output — the result Steps: 4. Test your code 3. Write the code 5. Debug and improve 1. Understand the problem 2. Plan your solution (algorithm) Try It! Write step-by-step instructions to make a peanut butter sandwich. Be specific! Debug Challenge: Your instructions say 'put peanut butter on bread' but the robot puts the jar on the bread! R… My Fix: www.littleactivity.com 2nd Grade · Science
