1. 1. If the amount of water increases, then the height of the plant will increase. This is an example of A hypothesis

2. 2. The variable that is changed (manipulated) in an experiment Independent variable

3. 3. The variable changes (responds) as a result of a change in the independent variable Dependent variable

4. 4. An explanation that can be tested with a scientific investigation. hypothesis

5. 5. What is the sum of the numbers in a set of data divided by the number of entries in the set? Mean

6. 6. What is the middle number in a data set when the data are arranged in numerical order? Median

7. 7. What is the number that appears most often? mode

8. 8. What is the difference between the highest and lowest values in a data set? range

9. 9. Using a graduated cylinder, 1 mL equals 1 cm 3

10. 10. Graduated cylinder measures volume of a liquid

11. 11. Mass is measured using what tool? triple beam balance scale

12. 12. A spring scale measures weight

13. 13. What tool would you use to measure length? ruler Trundle wheel

14. 14. Mass in measured in what metric units? grams

15. What is the amount of material in an object called? mass

16. 16. The amount of space an object takes up volume

17. 17. A scientific experiment that involves changing one factor and observing its effects on one thing while keeping all other things constant. Controlled experiment

18. 18. What is quantitative data ? descriptions of the natural world using numbers

19. 19. What is qualitative data? descriptions of the natural world using words

20. 20. What is the effect of the length of the paper airplane on the distance traveled? What is the independent variable? length of the paper airplane