1. CHAPTER 2 STUDY GUIDE

2. WHAT NUMBER IS THE METRIC SYSTEM BASED ON? The number 10

3. WHAT IS THE BASIC UNIT FOR MEASURING LENGTH IN THE METRIC SYSTEM? Meters

4. A GROUP OF PARTS THAT WORK TOGETHER TO PERFORM A FUNCTION OR PRODUCE A RESULT IS CALLED A System

5. THE KILOGRAM (KG) IS THE BASIC UNIT FOR WHICH MEASUREMENT? Mass

6. WHAT IS THE DIFFERENCE BETWEEN MASS AND WEIGHT? Mass is a measure of the amount of matter in an object. (Triple beam balance is used to measure) Weight is a measure of the force of gravity acting on an object. (A scale is used to measure)

7. WHAT TERM IS USED TO DESCRIBE THE AMOUNT OF SPACE AN OBJECT TAKES UP? Volume

8. WHAT IS THE FORMULA TO CALCULATE DENSITY? Density =. mass volume

9. WHAT IS THE BASIC SI UNIT TO MEASURE TEMPERATURE? Kelvin

10. A SHOE BOX MEASURES 6 CM HIGH, 7 CM WIDE, AND 20 CM LONG. WHAT IS ITS VOLUME? 6 X 7 X 20 = 840 cm 3

11. YOU MEASURE THE LENGTH OF A STRING THREE TIMES TO GET THE VALUES OF 34.0 CM, 34.1 CM, AND 34.2 CM. THE ACTUAL LENGTH IS 39.0 CM. ARE YOUR MEASUREMENTS… Precise

12. WHAT IS DENSITY? A measure of how much mass is contained in a given volume.

13. WHAT IS THE BASIC UNIT FOR FINDING THE VOLUME OF A LIQUID? Liters (L)

14. WHAT IS THE BASIC UNIT FOR FINDING THE VOLUME OF A SOLID? Cubic meter (m 3 )

15. mean:15mode: 14 median: 14range: 5 Sample Forest PlotNumber of Squirrels A14 B16 C14 D13 E18

16. WHAT TOOL IS USED TO MEASURE MASS? Triple beam balance

17. WHAT TOOL IS USED TO MEASURE THE VOLUME OF A LIQUID? Graduated Cylinder

18. WHAT TOOL IS USED TO MEASURE TEMPERATURE? Thermometer

19. WHAT IS A MODEL? WHY ARE THEY HELPFUL? A model is a representation of a simple or complex object or process Scientists use models to understand things that they cannot observe directly.

20. WHAT IS MASS? Mass is a measure of the amount of matter in an object.

21. IF LIQUIDS OF DIFFERENT DENSITIES ARE PLACED IN A JAR, WHERE WOULD THE LIQUID WITH THE HIGHEST DENSITY BE FOUND? at the bottom

22. A(N) ________ IS AN APPROXIMATION OF A NUMBER BASED ON REASONABLE ASSUMPTIONS. Estimate

23. WHY DO SCIENTISTS USE THE SI SYSTEM? Modern scientists use a version of the metric system called the international system of units (SI). A standard measurement system is important because it allows scientists to compare data and communicate with each other about their results.