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# Rockets and satellites

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Dear Students, remember that you have to be something characterized in the life!! because you are able to do that.
{My Thanks to All of You because you helped me to show this PPT in a very famous company of Smart Boards}. You can watched in YouTube Channel!

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### Rockets and satellites

1. 1. Created by : Hamdy Karim Grade level ( s ): 8th grade Subject area : Science Section 5 R ockets and Satellites
2. 2. KS Standards and Activity Instructions Standards / Indicators : ( Use KS standards, not district standards. Include both number and standard description as well as indicator.) Gr ades 8-9 S TANDARD 2 : PHYSICAL SCIENCE- The student will apply process skills to develop an understanding of physical science including: properties, Rockets, Satellites, and Satellite Motion. B enchmark 3 : The student will investigate motion and forces. I ndicator 2 : Describes, measures, and represents data on a graph showing the motion of an object (position, direction of motion, speed). Ac tivity Instructions : S lide 3- Click on the numbered list 1-4 to open questions for discussion for the class related to the motion of the tennis ball in the background. Slide 4- Continue the class discussion, click on the hidden definition of &quot;motion&quot;, and see if the new definition changes the classes answer to the first question. Slide 5- Read slide 5 to the class. Slide 6- Read each blue card to the class. Have students hold up one finger if they think it is in motion, and two fingers if they don't think the situation is describing motion. Once the class is showing their answers have a student click on the box to reveal the answer. Slide 7- Introduce the vocabulary word &quot;reference point&quot;. Have students create a list of reference points they could use while sitting on a bus. Slide 8- Click on the numbered list to open questions for class discussion. Slide 9- Introduce the metric system. Pass out meter sticks for students to look at. Show them each of the measurement units identified on the stick. Give students practice using units by completing the &quot;Metric Inventory 2&quot; document attached. Slide 10- Go over speed formulas, emphasizing difference between constant and average speed. Practice calculating speed by completing &quot;Bubble Gum Physics&quot; handout attached.
3. 3. · A rocket moves forward when gases expelled from the rear of the rocket push it in the opposite direction ·In a rocket, fuel is burned to make a hot gas ·This hot gas is forced out of narrow nozzles in the back of the rocket, propelling the rocket forward How do rockets travel in space? Action Reaction
4. 4. · Essential Questions · How do rockets travel in space? ·What are satellites and space stations used for?
5. 5. Newton’s third law of motion states that for … · every force, or action, there is an equal and opposite force, or reaction.
6. 6. Satellite · A natural or artificial object that revolves around an object in space ·Natural satellite Earth’s moon · Artificial satellite Sputnik 1
7. 7. What are satellites and space stations used for? · Satellites and space stations are used for communications, navigation, collecting weather data, and research.
8. 8. Circular Motion A ny object traveling in a circle is accelerating because it constantly changes direction. Ce ntripetal Force I t is the force that causes an object to move in a circular path. Ce ntripetal force is the gravitational force that pulls the satellite toward the center of Earth.
9. 9. Satellite Motion G ravity pulls satellite toward Earth. So why don't satellites fall to the ground? If you threw a ball faster at the top of a mountain at a certain speed, the path of the ball would match the curve of the Earth. So the ball would fall around Earth in a circle. S atellites in orbit around the Earth continuously fall toward Earth, but because Earth is curved they travel around it .
10. 10. Satellite Location Low orbit of less than 1000 Km Communication Communicate the world 36000 above Earth's surface Observation photographic &TV Low orbit of less than 1000 Km Maping photographic Satellite Function Height Images
11. 11. 1 The type of force that causes a satellite to orbit Earth is a ............ A Gravitational force B Air friction C Attractive force D Centripetal force
12. 12. 2 An object that travels around another object in space is called a(n) ........................ A Projectile B Inrtia C Mass D Satellite Satellite
13. 13. 3 Because the moon travels around Earth, it is a planet Yes No No