Page 110 - Science Course 3 (Book 1)

Mo3-L1: Vocabulary Review

Direction: In the puzzle below, each number will correspond to one letter of the alphabet. For example,
7 = I. Shaded letters will not be used. Crack the code by using the clues for hints. After you read
the clues and fill in the blanks, complete the chart with the number that corresponds to each
letter you have used.

1. a chart of Earth’s past
I I

16 2 26 23 26 16 7 25 13 7 6 2 22 25 17 23 2
2. change over time.
I I I

19 7 26 23 26 16 7 25 17 23 2 12 26 23 24 13 7 26 15
3. evidence of an organism’s activity
I
13 4 17 25 2 20 26 22 22 7 23
4. occurs when no individuals of a species remain
I I

2 8 13 7 15 25 13 7 26 15
5. atoms of the same element that have different numbers of neutrons
I

7 22 26 13 26 11 2 22
6. all fossils ever discovered on Earth
I
20 26 22 22 7 23 4 2 25 26 4 10
7. impression of an organism in rock 8. similar cells that work together
I
6 26 23 10 13 7 22 22 24 2
9. fossil copy of an organism in a rock

25 17 22 13

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