How fossils form
3rd grade (Year 4 in England) · 11 questions · Common Core: NGSS.3-LS4-1, NGSS.4-ESS1-1 · England: KS2 Y3 Rocks, KS2 Y6 Evolution and inheritance
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Question 1
Why do most fossils show bones, teeth and shells rather than skin?
- A. Scientists remove the skin
- B. Hard parts last longer; soft parts rot quickly
- C. Skin turns into rock straight away
- D. Animals had no skin
Question 2
In how a sea shell becomes a fossil, what happens straight after "the sediment slowly turns into rock"?
- A. its shell sinks to the sea floor
- B. layers of sediment cover it
- C. the fossil is found in the rock millions of years later
- D. a sea creature dies
Question 3
A footprint preserved in rock is called a…
- A. skeleton
- B. mineral
- C. crystal
- D. trace fossil
Question 4
In how a sea shell becomes a fossil, what happens straight after "the sediment slowly turns into rock"?
- A. the fossil is found in the rock millions of years later
- B. its shell sinks to the sea floor
- C. a sea creature dies
- D. layers of sediment cover it
Question 5
A footprint preserved in rock is called a…
- A. mineral
- B. trace fossil
- C. skeleton
- D. crystal
Question 6
In how a fossil forms, what happens straight after "an animal dies"?
- A. the soft parts rot away
- B. the rock is worn away and the fossil is uncovered
- C. it is quickly buried by mud or sand
- D. minerals slowly replace the bones over millions of years
Question 7
Why do most fossils show bones, teeth and shells rather than skin?
- A. Animals had no skin
- B. Scientists remove the skin
- C. Hard parts last longer; soft parts rot quickly
- D. Skin turns into rock straight away
Question 8
In how a sea shell becomes a fossil, what happens straight after "layers of sediment cover it"?
- A. the sediment slowly turns into rock
- B. the fossil is found in the rock millions of years later
- C. a sea creature dies
- D. its shell sinks to the sea floor
Question 9
Why do most fossils show bones, teeth and shells rather than skin?
- A. Hard parts last longer; soft parts rot quickly
- B. Scientists remove the skin
- C. Skin turns into rock straight away
- D. Animals had no skin
Question 10
In how a sea shell becomes a fossil, what happens straight after "layers of sediment cover it"?
- A. a sea creature dies
- B. its shell sinks to the sea floor
- C. the sediment slowly turns into rock
- D. the fossil is found in the rock millions of years later
Question 11
In which type of rock are fossils usually found?
- A. lava
- B. sedimentary
- C. metamorphic only
- D. igneous
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