5. C

11. The factor that responds to the change being made in the experiment. The factor that is purposely changed by the experimenter. Dependent Variable Independent Variable

12. Read the information below and then answer the questions. SpongeBob and Patrick love to go jellyfishing. They wondered if a new brand of jellyfish bait would help them catch more jellyfish. To test their idea, they bought a big container of bait for their next 3 trips to their top-secret fishing spot. SpongeBob fished without any bait, while Patrick used the new bait. Both of them kept track of how many jellyfish they caught in 30 minutes, which is shown in the chart. 1.Which person was the control? 2. What is the independent variable? 3. What is the dependent variable? 4. Based on the data, how would you rate the new bait? SpongeBobPatrick 2524 1828 2619

13. Read the information below and then answer the questions. SpongeBob and Patrick love to go jellyfishing. They wondered if a new brand of jellyfish bait would help them catch more jellyfish. To test their idea, they bought a big container of bait for their next 3 trips to their top-secret fishing spot. SpongeBob fished without any bait, while Patrick used the new bait. Both of them kept track of how many jellyfish they caught in 30 minutes, which is shown in the chart. 1.Which person was the control? 2. What is the independent variable? 3. What is the dependent variable? 4. Based on the data, how would you rate the new bait? SpongeBobPatrick 2524 1828 2619 SpongeBob Jellyfish Bait Number of jellyfish caught The bait appears to have helped a small amount, but shouldn’t be rated as a great deal. Overall Patrick caught 2 more jellyfish than SpongeBob.

14. Read the information below and then answer the questions. SpongeBob loves to grow flowers for his pal Sandy, who loves big, colorful flowers. He found a new brand of seeds coated with a special “booster” fertilizer that said it would produce huge flowers. He planted 5 of the new seeds in one container and 5 of the old brand of seeds in another container. He placed both containers on a sunny windowsill and watered them every day. He measured the diameter of each flower, which is shown in the chart. 1.Which group was the control? 2. What is the independent variable? 3. What is the dependent variable? 4. What is the average diameter for each group? Old Seeds10 cm12 cm14 cm6 cm8 cm New Seeds8 cm14 cm10 cm12 cm16 cm 5. Which seeds are the best for big flowers?

15. Read the information below and then answer the questions. SpongeBob loves to grow flowers for his pal Sandy, who loves big, colorful flowers. He found a new brand of seeds coated with a special “booster” fertilizer that said it would produce huge flowers. He planted 5 of the new seeds in one container and 5 of the old brand of seeds in another container. He placed both containers on a sunny windowsill and watered them every day. He measured the diameter of each flower, which is shown in the chart. 1.Which group was the control? 2. What is the independent variable? 3. What is the dependent variable? 4. What is the average diameter for each group? Old Seeds10 cm12 cm14 cm6 cm8 cm New Seeds8 cm14 cm10 cm12 cm16 cm 5. Which seeds are the best for big flowers? The seeds without the booster fertilizer Booster fertilizer on the new seeds Size or diameter of the flower Old = 10 cm, New = 12 cm New seeds w/ the booster

18. Calculate the volume for each shape below. The unit for each measurement is cm.

21. Helium balloons float in air, oil floats on top of water, and our atmosphere is above the water on the Earth’s surface. (Assume liquid water for the blue box.) Density tells us how tightly packed the atoms are within a given volume.

22. Will it float in water? Determine if the following shapes will float in water by calculating the density for each item. D = M / V Mass: 15 g Volume: 20 mL Mass: 1000 g Volume: 50 mL Mass: 225 g Volume: 100 mL Mass: 10 g Volume: 200 mL

23. Will it float in water? Determine if the following shapes will float in water by calculating the density for each item. D = M / V Mass: 15 g Volume: 20 mL Density: 0.75 g/mL Mass: 1000 g Volume: 50 mL Density: 20.0 g/mL Mass: 225 g Volume: 100 mL Density: 2.25 g/mL Mass: 10 g Volume: 200 mL Density: 0.05 g/mL If the density is less than 1.0 g/cm 3 then it will float. 1 g/mL = 1 g/cm 3

24. What is the total mass? Where should the riders be?

25. What is the total mass? Where should the riders be? 172 g http://www.ohaus.com/products/education/weblab/TBBread.html

26. gram Triple beam balance M = D x V

27. Liter, cubic centimeter Graduated cylinder Overflow can

28. meter Metric ruler/ meter stick

29. newton Spring scale

31. X 10 ÷ 10 30 150 4.9 10.3

32. 1,955 cm = __________ m 178 cm = _________ m 2,299 m = ____________ cm 42 m = _________ cm 19.55 1.78 229,900 4200 ÷ 100 x 100

33. K H D U D C M King Henry Died Unexpectedly Drinking Chocolate Milk

34. Unsafe

38. Eye safety Goggles Strong Fumes Hot objects

40. What’s wrong? Identify 6 different safety concerns shown in the picture below. Image: http://morrisonlabs.com/lab_safety.htm

41. The answers are … Image: http://morrisonlabs.com/lab_safety.htm Don’t eat or drink while in the lab. Don’t fool around during a lab. Always wear safety goggles when doing an experiment Always point test tubes and other items away from yourself and others when heating. Keep hair and other flammable objects away from flames. Don’t leave a flame unattended.