1. Why should we convert units within the metric system? 2. The metric system is based on units of

a) twenty five b) fives c) sixteen d) tens

3. Work the “SI Estimation Challenge” in the box on page 13.

4. Copy the “study skills” figure on page 14.

5. Convert 52,000 kilometers to centimeters. 52,000 km = cm

6. Convert 25 millimeters meters. 25 mm = m

7. A conversion factor is a ratio with a value of

a) one b) two c) five d)ten

science is a systematic and logical approach to discovering how things in the universe work. true to this definition, science aims for measurable results through testing and analysis. science is based on fact, not opinion or preferences. the process of science is designed to challenge ideas through research.

explanation:

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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