Home Free Printables Science 8th Grade 8th Grade Science — Human Impacts on Earth — Proxy Records and the Resolution They Offer Preview — download the full PDF for print-quality output
Science 8th Grade Ages 13–14
8th Grade Science — Human Impacts on Earth — Proxy Records and the Resolution They Offer 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 proxy records and the resolution they offer science worksheet. Ice cores trap bubbles of genuinely ancient air, giving direct carbon dioxide measurements back 800,000 years. Tree rings and ocean sediments are indirect and must be calibrated against instrument records over the period where the two overlap. Every proxy also has a resolution — annual for tree rings, decadal or worse for deep sediment — and reporting that resolution is part of reporting the result, because a record that averages over fifty years cannot show a ten-year event. Part of the Human Impacts on Earth lesson track. For 8th Grade Science (ages 13–14).
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Lab Report — Proxy Records and the Resolution They Offer SCIENCE · 8TH GRADE Name Date Complete this lab report for your investigation. Purpose / Research Question: Does a heavier ball bounce higher? Materials: tennis ball, ping-pong ball, rubber ball, metre ruler, wall, partner Hypothesis (If... then... because...): Write your own: If I change ___, then ___ because ___ Independent Variable: The ball being dropped Dependent Variable: How high it bounces from a 1 m drop Procedure: 1. Tape the ruler upright against the wall 2. Hold the first ball at 100 cm 3. Drop it and have a partner read the bounce 4. Do three drops per ball and average them 5. Rank the balls by bounce height Data / Results: Ball Drop 1 (cm) Average (cm) Tennis Ping-pong Rubber Conclusion: Bounce height depended on... rather than weight because... www.littleactivity.com 8th Grade · Science
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Lab Report — Proxy Records and the Resolution They Offer SCIENCE · 8TH GRADE Name Date Complete this lab report for your investigation. Purpose / Research Question: Does a heavier ball bounce higher? Materials: tennis ball, ping-pong ball, rubber ball, metre ruler, wall, partner Hypothesis (If... then... because...): Write your own: If I change ___, then ___ because ___ Independent Variable: The ball being dropped Dependent Variable: How high it bounces from a 1 m drop Procedure: 1. Tape the ruler upright against the wall 2. Hold the first ball at 100 cm 3. Drop it and have a partner read the bounce 4. Do three drops per ball and average them 5. Rank the balls by bounce height Data / Results: Ball Drop 1 (cm) Average (cm) Tennis Ping-pong Rubber Conclusion: Bounce height depended on... rather than weight because... www.littleactivity.com 8th Grade · Science
Animal Life Cycle — Butterfly SCIENCE · KINDERGARTEN Name Date Draw and label the butterfly life cycle. 1. Egg 2. Caterpillar 3. Chrysalis 4. Butterfly Life Cycle of a Butterfly www.littleactivity.com Kindergarten · Science Bug Observation Log SCIENCE · KINDERGARTEN Name Date Record your bug observations. Bug Observation Log What to observe: • behavior & activity • movement patterns • feeding habits • habitat details Day Drawing Notes Day 1 sketch Bird visited feeder 3 times, ate seeds, flew NE Day 2 Day 3 Day 4 Summary: After observing for 4 days, I noticed... www.littleactivity.com Kindergarten · Science
Observation Log — Bird Watching SCIENCE · KINDERGARTEN Name Date Record your bird watching observations. Bird Watching Observation Log What to observe: • behavior & activity • movement patterns • feeding habits • habitat details Trial Drawing Result Day 1 sketch Bird visited feeder 3 times, ate seeds, flew NE Day 2 Day 3 Day 4 Summary: After observing for 4 days, I noticed... www.littleactivity.com Kindergarten · Science
Observation Log — Plant Growth Journal SCIENCE · KINDERGARTEN Name Date Record your plant growth journal observations. Plant Growth Journal Observation Log What to observe: • leaf color & shape • height (measure!) • new growth or buds • soil moisture Time Sketch What I noticed Day 1 sketch Tiny green sprout, 0.5 cm tall, soil damp Day 2 Day 3 Day 4 Summary: After observing for 4 days, I noticed... www.littleactivity.com Kindergarten · Science
Observation Log — Seed Germination SCIENCE · KINDERGARTEN Name Date Record your seed germination observations. Seed Germination Observation Log What to observe: • leaf color & shape • height (measure!) • new growth or buds • soil moisture Day Drawing Notes Day 1 sketch Tiny green sprout, 0.5 cm tall, soil damp Day 2 Day 3 Day 4 Summary: After observing for 4 days, I noticed... www.littleactivity.com Kindergarten · Science
Observation Log — Nature Scavenger Hunt SCIENCE · KINDERGARTEN Name Date Record your nature scavenger hunt observations. Nature Scavenger Hunt Observation Log What to observe: • what you see • what you measure • any changes • questions you have Trial Drawing Result Day 1 sketch First observation — everything looks normal Day 2 Day 3 Day 4 Summary: After observing for 4 days, I noticed... www.littleactivity.com Kindergarten · Science
