Falling Feather from i say on Vimeo.
Have You Ever Wondered?
Thanks to gravity, we have our feet firmly on the ground. Without gravity, we might float right into outer space and never be seen again. Instead, Earth pulls us toward its center at all times, keeping us on the ground. Every object with mass has a gravitational pull on the objects around it. That force depends upon the masses of the objects. Things with a lot of mass, such as Earth, exert a strong gravitational pull on the objects near it, such as you and me. Air resistance: Air is all around us. Those air molecules push against each other and other objects. They provide an upward force of friction against falling objects. Galileo also discovered that objects that are more dense are affected less by air resistance, while objects that are less dense will be slowed down more by air resistance. This explains why a feather will fall to the ground very slowly when dropped. On the other hand, a brick will fall quickly to the ground as if there was no air around it. Scientists who have tested these theories will tell you that, if you drop a feather in a vacuum (a container with no air), it will fall at the same rate as the brick! PowToon is an alternative to PowerPoint and Prezi. Check out the website and have a go at making your own presentation. You can work independently or with a partner. This will be your one minute presentation for next week. Your topic has to be something to do with the solar system. Good luck! Using this BBC website can you create a fair test for the virtual experiment, using the fair test planning sheet. Remember that you are only allowed to change one variable. All of your other variables must remain the same. Please write down your conclusion in the comments section below.
Hi guys. Today, we have been looking at the chunking (partial quotient) method of long division. If you feel like you need to practice, you can create your own worksheets using this website. You can also practice your chunking here. |
Grade 5M
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