This Grade 3 ancient versus modern worksheet asks students to compare fossils with living animals. Multiple-choice questions match trilobites to horseshoe crabs, small dinosaurs to modern birds, and ancient sharks to today's sharks. Fill-ins teach Grade 3 vocabulary such as ancestor, evolved, and enamel, showing that some species changed a lot while others barely changed at all across millions of years of Earth's long, fascinating evolutionary story.
Style:
Fossils and Evidence of Past Life
Part A: Multiple Choice
Circle the best answer for each question.
1. In Grade 3 science, which modern animal is most similar in body plan to an ancient trilobite?
A) Horseshoe crab
B) House cat
C) Bald eagle
D) Oak tree
2. In Grade 3 science, fossils show modern birds are most closely related to which ancient group?
A) Jellyfish
B) Small meat-eating dinosaurs
C) Giant plant-eating dinosaurs
D) Sharks
3. In Grade 3 science, shark teeth from millions of years ago look very similar to today's teeth, which shows sharks have ___.
A) changed completely
B) never existed
C) changed very little
D) become plants
4. In Grade 3 science, a mammoth is considered an ancient ___ of today's elephant.
A) enemy
B) ancestor
C) robot
D) predator
Part B: Fill in the Blank
Write the correct answer on each line.
1. In Grade 3 science, the horseshoe crab is often called a living fossil because it barely changed.
2. In Grade 3 science, an earlier species that a modern animal descends from is called an ancestor.
3. In Grade 3 science, feathered dinosaur fossils support the idea that birds evolved from dinosaurs.
4. In Grade 3 science, comparing fossils of different ages helps scientists see how animals have evolved.
5. In Grade 3 science, a shark tooth fossil is a hard clue because teeth are made of tough enamel.
Fossils and Evidence of Past Life
★ Part A: Multiple Choice
Circle the best answer for each question.
1. In Grade 3 science, which modern animal is most similar in body plan to an ancient trilobite?
A) Horseshoe crab
B) House cat
C) Bald eagle
D) Oak tree
2. In Grade 3 science, fossils show modern birds are most closely related to which ancient group?
A) Jellyfish
B) Small meat-eating dinosaurs
C) Giant plant-eating dinosaurs
D) Sharks
3. In Grade 3 science, shark teeth from millions of years ago look very similar to today's teeth, which shows sharks have ___.
A) changed completely
B) never existed
C) changed very little
D) become plants
4. In Grade 3 science, a mammoth is considered an ancient ___ of today's elephant.
A) enemy
B) ancestor
C) robot
D) predator
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) In Grade 3 science, the horseshoe crab is often called a living fossil because it barely changed.
2) In Grade 3 science, an earlier species that a modern animal descends from is called an ancestor.
3) In Grade 3 science, feathered dinosaur fossils support the idea that birds evolved from dinosaurs.
4) In Grade 3 science, comparing fossils of different ages helps scientists see how animals have evolved.
5) In Grade 3 science, a shark tooth fossil is a hard clue because teeth are made of tough enamel.
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9 Questions
12-18 minutes
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