9/21/2017 Thursday

Science Log Q 1 Week 4 Thursday, September 21: Compare and contrast elevation and altitude Altitude far something is above Earth’s surface---the distance between the ground and an object or reference point above the ground. Butterflies fly at low altitudes; jet airplanes fly at high altitudes. Elevation is how far a location on Earth, such as a city or a mountain, is above sea level. Elevation usually refers to a position on Earth’s surface.

NOTEBOOK CHECK Use the form to check your notebook, Have 2 people verify and initial their score Be honest, or I will be extra tough when I verify your score. If it is dishonest, you WILL lose points.

15. Aerial photography Use the Science Resources Open to the photos “ White House Neighborhood” and “White hou8se Community” in the images and Data section, and think about how the photographs were taken.

16. Aerial photography How do you think the photos were taken? Airplanes flew over, satellite from space with a good telescope and camera. The photos could have been taken at different times and patched together

17. Altitude Altitude is the distance above the surface of Earth. The community and neighborhood photos were viewed at fairly low altitudes. Since the point of view is close to Earth’s surface, it is fairly easy to locate your school and, therefore, to answer the question, Where am I? What would the view be like if we moved ten times higher in altitude, then ten times higher again?

18. Google Earth Finish the last half of the birds eye view, record your data

19. Student observations What are your observations How does the number of observations of human- made structures compare to the number of observations of natural structures as the elevation increases? The number of visible human-made structures declines as altitude increases, and human-made structures are no longer visible at the regional level. How can you explain your observations? Human-made structures are too small to be seen as distinct, separate objects at this altitude.

20. Focus on the school Google Earth, start at our school at 1 km altitude. Zoom out to 10 km and stop. Keep the marker on our school to aid in locating it. Make sure all labels are off except Terrain Continue zooming out stop at 100 km, 1000 km, and 10,000 km. At each ask yourself, Where are you in the image? How accurately can you place yourself in this image? It should become more and more difficult as the description of location becomes more general

21. Predict space-shuttle view If you were flying in a space shuttle, how much of Earth’s surface do you think you would be able to see? Write your prediction on the bottom half of the focus question page 20 A space shuttle usually flies at an altitude between 220 and 400 km, with a few orbiting as high as 600 km.

21. Predict space-shuttle view A space shuttle flies between the “area” and “region” altitudes (100 km and 1000 km). Refer to your birds-eye views notebook sheets and review what you would see at those altitudes. When you zoom to that altitude on Google Earth you will probably discover that you can’t see as much of Earth’s surface as you thought you could.

22. High-altitude images The image at the community altitude was taken from about 10,000 m, or about the altitude of a cruising commercial jetliner. No problem acquiring that photo from a plane. Airplanes can only fly to about 20,000 m, and the next images is the view from 100,000 m. How could that be?

22. High-altitude images Images from points of view that are higher than airplanes can fly are either digital images sent to Earth by radio waves from satellites in orbit or composites of smaller images that have been pieced together to look like one image. Google Earth images are a combination of both.

23. Power of ten Each successive image of Earth, starting with the building view of our school, represents the view from a point of view that is ten times farther away than the previous point of view. Structures on Earth’s surface in the building view look ten times larger than the same structures in the neighborhood view. Structures in the neighborhood view look ten times larger than the same structures in the community view. Consequently, structures in the neighborhood view look 100 times larger than the same structures in the area view.

24. Response sheet Answer the Response sheet inv. 1 page 22 You should have: A person’s specific location can be described in many ways depending on the particular frame of reference. A state is one frame of reference, and a country is another frame of reference. Both Florida and the United States can describe the same location.

26. Answer focus Question 1.1 page 20 What can be seen from 100 m altitude? 1000 m? 10,000m ? Summarize your findings.

Vocab, make sure you have all and definitions, they are in the index with page numbers where the definition can be found. Altitude Bird’s-eye view Elevation Frame of Reference Location Point of view