PHYSICS TO GO

1. Repeat the activity using a quarter.

1. Record your results.
   
   
2. How close are the results you got using the direct and indirect method of measurement?
   
   
3. Which method is more accurate? Explain your answer.
   
   

2. Do the activity again, but this time aim at the card.

1. Record your results.
   
   
2. Compare the results with those from the previous question.How does aiming change the results? Explain your answer.
   
   

3. Find the area of circles with the following diameters:

1. a) 4 cm
   
   
2. b) 7 cm
   
   
3. c) 10 cm
   
   
4. d) 100 cm
   
   

4. A dart target at a carnival has a diameter of 45 cm. The bull's-eye has a diameter of 5 cm.

1. What is the ratio of the area of the bull's-eye to the area of the entire dart board?
   
   
2. You are given three darts per game. What is the probability that one dart will hit the bull's-eye? Explain how you found the probability.
   
   
3. c)You play 5 games. How many bull's-eyes are you likely to hit?
   
   

5. write each of these numbers in standard form. then order them from the greatest to the least. 10⁰ 10¹ 10^-1 10² 10^-2 10³ 10^-3 10^-4 10^-4

6. Which is greater, 10^-10 or 10^-15 ? How many times greater?

Have you ever guessed the number of pennies in a jar or tried to count how many people were in a large hall? If you have, you've used indirect measurement and estimation. Think of two situations from your life in which you needed to know "about how many." Describe how you made your estimate. Would you use different ways now? If yes, describe the ways. If no, state why your original way was the best.