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8th SCIENCE Chpt 10
8th Cht 10 CLUES TO EARTH'S PAST LESSON 3
Question | Answer |
---|---|
ABSOLUTE AGE | numerical age of a rock or other object |
HALF-LIFE | time required for half of the parent isotopes to decay into daughter isotopes |
ISOTOPES | atoms of the same element that have different numbers of neutrons |
MINERAL | naturally occurring, inorganic solid with a definite chemical composition and an |
RADIOACTIVE DECAY |