Report: Galileo (2)
Type the answers to the following questions in the OW box. Remember to number your answers.
1. How much do you weigh (on our planet)?
Click HERE to see how much would weigh other places. :) Use this site to answer the next two questions:
2. How much would you weigh on Mercury?
3. How much would you weigh on the sun?
Remember to label your measurements. (Example 22 lb.)
Next click HERE to visit a site about Galileo. Read through the information about Galileo. Answer these questions.
4. What year was Galileo born in?
5. According to this site what other famous and talented person was born this same year?
6. What did Galileo notice that made him question and later disprove the other theory about falling objects?
Finally click HERE to view the animated video of Galileo's experiment.
After viewing the animation answer these questions:
7. Whose theory proved to be incorrect?
8. What was that incorrect theory?
9. What was Galileo's theory?
Type the answers to the following questions in the OW box. Remember to number your answers.
1. How much do you weigh (on our planet)?
Click HERE to see how much would weigh other places. :) Use this site to answer the next two questions:
2. How much would you weigh on Mercury?
3. How much would you weigh on the sun?
Remember to label your measurements. (Example 22 lb.)
Next click HERE to visit a site about Galileo. Read through the information about Galileo. Answer these questions.
4. What year was Galileo born in?
5. According to this site what other famous and talented person was born this same year?
6. What did Galileo notice that made him question and later disprove the other theory about falling objects?
Finally click HERE to view the animated video of Galileo's experiment.
After viewing the animation answer these questions:
7. Whose theory proved to be incorrect?
8. What was that incorrect theory?
9. What was Galileo's theory?
Experiment: Gravity (3)
Follow the directions on the OW page page.
Then answer questions 1 - 6. (Be sure to number them.) :)
1. Which hits the floor first?
2. Which one is slowed by air friction?
3. Do you think they would fall with equal speed if there were no friction from the air?
4. Why? (If you're not sure of your answer to "why?" look back at what you learned about Galileo and falling objects.)
5. Why are airplanes streamlined with rounded instead of square wings and bodies? Write your idea in one or two sentences.
6. Does your idea for answer #5 have anything to do with the friction caused by moving through the air?
Review friction in the previous lessons if you are not sure.
Then answer questions 1 - 6. (Be sure to number them.) :)
1. Which hits the floor first?
2. Which one is slowed by air friction?
3. Do you think they would fall with equal speed if there were no friction from the air?
4. Why? (If you're not sure of your answer to "why?" look back at what you learned about Galileo and falling objects.)
5. Why are airplanes streamlined with rounded instead of square wings and bodies? Write your idea in one or two sentences.
6. Does your idea for answer #5 have anything to do with the friction caused by moving through the air?
Review friction in the previous lessons if you are not sure.
Experiment: Hammer and Nail (7)
Follow these directions. Make sure to listen to the CLICK ME at the top of the OW page. Then watch as Stanley completes the experiment and explains about the action of a simple machine. If you have the supplies you may also want to try this experiment at home. : )
Then answer the following questions. Be sure to number each one and write in complete sentences.
1. Hammer the nail halfway into the block of wood.
2. Try to remove the nail with your fingers. Can you do it?
3. Try to remove the nail with the claw of the hammer. Can you do it?
4. In which way is the work easier—with your muscle alone or with the hammer?
5. Why?
Follow these directions. Make sure to listen to the CLICK ME at the top of the OW page. Then watch as Stanley completes the experiment and explains about the action of a simple machine. If you have the supplies you may also want to try this experiment at home. : )
Then answer the following questions. Be sure to number each one and write in complete sentences.
1. Hammer the nail halfway into the block of wood.
2. Try to remove the nail with your fingers. Can you do it?
3. Try to remove the nail with the claw of the hammer. Can you do it?
4. In which way is the work easier—with your muscle alone or with the hammer?
5. Why?
Experiment: Inclined Plane (9)
Watch the video on the OW page.
Answer the following questions in the OW box being sure to number your answers.
(Remember to label the measurements - kilograms or kg.)
1. How much did the truck weigh?
2. How much effort or force did it take to lift it directly?
3. How many effort or force did it take to lift the truck up the inclined plane?
4. Which took less effort?
5. Explain why.
6. What was the *difference in the two?
Hint: *Write a subtraction problem. The answer will tell you the *difference in the force it took to lift it.
Answer the following questions in the OW box being sure to number your answers.
(Remember to label the measurements - kilograms or kg.)
1. How much did the truck weigh?
2. How much effort or force did it take to lift it directly?
3. How many effort or force did it take to lift the truck up the inclined plane?
4. Which took less effort?
5. Explain why.
6. What was the *difference in the two?
Hint: *Write a subtraction problem. The answer will tell you the *difference in the force it took to lift it.
Experiment: Screw and Nail (12)
Watch the video to see how Stanley completes the experiment. You may also do the experiment on your own if you have the supplies, otherwise the video will help you understand so you can answer the questions. :) (Be sure to number your answers.)
Number your answers. Write your answers in complete sentences.
Number your answers. Write your answers in complete sentences.
- Which one is harder to pull apart?
- Why?
- Which took more effort to fasten together?
- Was it worth it?
- Now can you answer the question: "Why is a screw often used instead of a nail?"
Experiment: Pulleys (15)
First click HERE to view a video.
1. Write one interesting thing you learned.
Next, click HERE to view another video.
2. What kind of pulley do they use to lift the weights? What did they call it?
3. Name an example of this kind of pulley that was referred to at the end of the video.
Finally watch the video on the OW project page. Then answer the following questions.
4. How much weight does the spring scale show?
5. Does the use of one fixed pulley change the weight of the load?
Answer these questions about part two of the video.
6. After a second rope is added what weight does the spring scale show?
7. Find out why, in Part 2, the weight is different than what was recorded in Part 1. Type the reason in the OW box.
****Type the answers to the questions in the OW box. Remember to number your answers. Do not forget.**** :)
First click HERE to view a video.
1. Write one interesting thing you learned.
Next, click HERE to view another video.
2. What kind of pulley do they use to lift the weights? What did they call it?
3. Name an example of this kind of pulley that was referred to at the end of the video.
Finally watch the video on the OW project page. Then answer the following questions.
4. How much weight does the spring scale show?
5. Does the use of one fixed pulley change the weight of the load?
Answer these questions about part two of the video.
6. After a second rope is added what weight does the spring scale show?
7. Find out why, in Part 2, the weight is different than what was recorded in Part 1. Type the reason in the OW box.
****Type the answers to the questions in the OW box. Remember to number your answers. Do not forget.**** :)