This Grade 3 hard-2 worksheet helps students tell fossils apart from plain rocks and modern bones. Grade 3 learners choose the best fossil evidence of a past sea, identify which items are not fossils, and pick lists of trace fossils. Five fill-in-the-blank items review words like fossil, mold, cast, extinct, and evidence, strengthening Grade 3 understanding of how scientists read clues preserved in rock across many places today.
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Fossils and Evidence of Past Life
Part A: Multiple Choice
Circle the best answer for each question.
1. Which Grade 3 item is the best fossil evidence of a past sea?
A) A river pebble
B) A shark tooth in desert rock
C) A living cactus
D) A modern seashell on a beach
2. Which of these is NOT a fossil in Grade 3 science?
A) A bone from a cow alive today
B) A fossilized fern leaf
C) A dinosaur footprint in rock
D) A mammoth tooth in ice
3. How do paleontologists decide what an extinct animal looked like in Grade 3 science?
A) They guess without using clues
B) They compare fossils to modern animals
C) They read storybooks only
D) They only study rocks
4. Which choice lists only trace fossils for Grade 3?
A) Bones, teeth, and shells
B) Footprints, burrows, and coprolite
C) Leaves, twigs, and flowers
D) Sand, mud, and pebbles
Part B: Fill in the Blank
Write the correct answer on each line.
1. A bone from a cow that is alive today is not a fossil because it is not old enough.
2. The empty shape a shell leaves in rock is a mold fossil.
3. When minerals fill that empty shape, they form a cast fossil.
4. An organism with no living members today is called extinct.
5. Fossils are strong evidence about life on Earth in the past.
Fossils and Evidence of Past Life
★ Part A: Multiple Choice
Circle the best answer for each question.
1. Which Grade 3 item is the best fossil evidence of a past sea?
A) A river pebble
B) A shark tooth in desert rock
C) A living cactus
D) A modern seashell on a beach
2. Which of these is NOT a fossil in Grade 3 science?
A) A bone from a cow alive today
B) A fossilized fern leaf
C) A dinosaur footprint in rock
D) A mammoth tooth in ice
3. How do paleontologists decide what an extinct animal looked like in Grade 3 science?
A) They guess without using clues
B) They compare fossils to modern animals
C) They read storybooks only
D) They only study rocks
4. Which choice lists only trace fossils for Grade 3?
A) Bones, teeth, and shells
B) Footprints, burrows, and coprolite
C) Leaves, twigs, and flowers
D) Sand, mud, and pebbles
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) A bone from a cow that is alive today is not a fossil because it is not old enough.
2) The empty shape a shell leaves in rock is a mold fossil.
3) When minerals fill that empty shape, they form a cast fossil.
4) An organism with no living members today is called extinct.
5) Fossils are strong evidence about life on Earth in the past.
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9 Questions
12-18 minutes
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