This Grade 3 medium-2 worksheet deepens fossil-evidence thinking for Grade 3 science. Students read clues like fish fossils in a desert, mammoth fossils in cold places, and fern fossils in icy areas to infer past environments. They also match fossils with what they show about movement or climate. Nine fill-in-the-blank items and one matching section support careful Grade 3 reasoning with vocabulary like extinct, mold, cast, and sediment today.
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Fossils and Evidence of Past Life
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Fossils of fish found in a desert suggest the area was once covered by water.
2. A fern leaf preserved in rock is an example of a body fossil.
3. Mammoth fossils in cold places suggest that region was once very cold.
4. Small ancient worm tunnels in rock are examples of trace fossils.
5. An organism that has died out completely is said to be extinct.
6. A hollow shape of a shell left in rock is a mold.
7. When minerals fill a mold, they make a cast of the original shape.
8. Layers of sediment build up over time and can preserve organisms as fossils.
9. Scientists compare fossils to living animals to tell if a species is still alive.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Sea fossils on a mountain
→ Area was once underwater
Evidence of past ice-age animals
Fern fossil in icy area
→ Area was once warmer
Area was once warmer
Mammoth fossils
→ Evidence of past ice-age animals
Area was once underwater
Dinosaur footprints
→ Trace fossil showing movement
Trace fossil showing movement
Fossils and Evidence of Past Life
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) Fossils of fish found in a desert suggest the area was once covered by water.
2) A fern leaf preserved in rock is an example of a body fossil.
3) Mammoth fossils in cold places suggest that region was once very cold.
4) Small ancient worm tunnels in rock are examples of trace fossils.
5) An organism that has died out completely is said to be extinct.
6) A hollow shape of a shell left in rock is a mold.
7) When minerals fill a mold, they make a cast of the original shape.
8) Layers of sediment build up over time and can preserve organisms as fossils.
9) Scientists compare fossils to living animals to tell if a species is still alive.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
Sea fossils on a mountain
→ Area was once underwater
Evidence of past ice-age animals
Fern fossil in icy area
→ Area was once warmer
Area was once warmer
Mammoth fossils
→ Evidence of past ice-age animals
Area was once underwater
Dinosaur footprints
→ Trace fossil showing movement
Trace fossil showing movement
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Complete each section carefully.
10 Questions
10-15 minutes
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