Exercise is important. C. A person's heart rate slows down in 3 minutes. D. 9. Carlos is doing a science project. He wants to find out which school subject his classmates like best. He will ask them whether they prefer science, math, or recess. Which is the best hypothesis for his project? First, I will ask everyone which subject they like best. A. I found out that 15 people like math. B. Most students like science best. C. There are more boys than girls in my class. D. 10. Which of the following statements is a valid hypothesis? What causes the tides? A. Talc is softer than quartz. B. Ghosts do not exist. C. A cat purrs when it is happy. D. Answers 1. B 2. D 3. A 4. A 5. C 6. D 7. B 8. D
C. Exercise is important. D. A person's heart rate slows down in 3 minutes. 9. Carlos is doing a science project. He wants to find out which school subject his classmates like best. He will ask them whether they prefer science, math, or recess. Which is the best hypothesis for his project? A. First, I will ask everyone which subject they like best. B. I found out that 15 people like math. C. Most students like science best. D. There are more boys than girls in my class. 10. Which of the following statements is a valid hypothesis? A. What causes the tides? B. Talc is softer than quartz. C. Ghosts do not exist. D. A cat purrs when it is happy. Answers 1. B 2. D 3. A 4. A 5. C 6. D 7. B 8. D
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