PPT-Gravity: A Force of Attraction

Mr McMartin Beta Pod Science Question Have you ever seen a video of astronauts on the moon They bounce around like beach balls even though they wear big bulky spacesuits Why is leaping on the moon easier than leaping on earth. Gravity. Gravity is a force that for us is always directed downwards. But to say that gravity acts 
downwards is not correct. Gravity acts down, no matter where you stand on the Earth. It is 
better to say that on Earth gravity pulls objects towards the center of the Earth. So no matter 
where you are on Earth all objects fall to the ground. By Emily Weil. 9/10/09. Science Standard 3- The Physical Setting. Indicator 5.3.6- Demonstrate that things on or near Earth are pulled towards it by Earth’s gravity.. Taken from: . http://www.indianastandards.org/standardSummary.asp?Subject=sci&Grade=5. A Brief Timeline of the . Discovery of Gravity. Aristotle. There . is . no effect or motion without a cause. . . The element of earth was thought to be heavy by nature and therefore pulled towards the centre of the (geocentric) universe.. ASTR 101. Prof. Dave Hanes. Orbiting Near, Around, . and Away from the Earth. Let’s consider:. Ballistic missiles on Earth. Artificial satellites. Geosynchronous satellites. Actually escaping the Earth. Bell work. 1. ..  Which is generated when a bar magnet is moved through a wire coil?. A. electric current. B. gravitational field. C. thermal energy. . D. solar energy. Bell work. 1. ..  Which is generated when a bar magnet is moved through a wire coil?. EQ: What changes an object’s motion?. Friction and Gravity. What happens when you jump on a sled on the side of a snow-covered hill?. What happens at the bottom of the hill?. Friction and Gravity. Why does the sled’s motion change on the side of the hill and then again at the bottom?. Write down all given information. Write the formula you need to solve the problem.. Substitute the numbers in the equation.. Show all operations and solve.. Answers should include both numbers and units.. Gravity. Gravity is a force that for us is always directed downwards. But to say that gravity acts 
downwards is not correct. Gravity acts down, no matter where you stand on the Earth. It is 
better to say that on Earth gravity pulls objects towards the center of the Earth. So no matter 
where you are on Earth all objects fall to the ground. Newton’s Law of Universal Gravitation. Newton Did not discover gravity, but he did discover gravity was universal. In other words, everything pulls on everything else.. States:. Every object attracts every other object with a force that for any two objects is directly proportional to the mass of each object, and indirectly proportional to the distance between them.. Honors Physics . Zero Gravity Cats!. Universal Gravitation. ALL. objects attract each other with a force of gravitational attraction. Gravity is universal. . This . force of gravitational attraction is directly dependent upon the masses of both objects and inversely proportional to the square of the distance that separates their centers. . A. nswer 9/7/16. A hiker’s velocity begins at 1.8 m/s uphill and changes to 1.5 m/s uphill. How do you know that the hiker has a negative acceleration?. 4 Types of Friction. The 4 types of friction are: . Convert the following to scientific notation. Distance from Sun. : 92,960,000 . miles ____. Estimated Age of universe – 14,000,000,000. Convert the following to standard form. Speed of light = 9.0 * 10. What celestial object is attracted to the Earth?. The Moon. What celestial object is the Earth attracted to?. The Sun. Effect of the moon on the Earth. The Moon’s gravity also pulls on the Earth, but because the Earth is solid, it doesn’t seem to respond.. Forces & Gravity. Notes. Write down the words in yellow.. The words in white are discussion points, you may write these down, but are not required.. Gravity. Gravity is a . force. that pulls objects toward each other..