How can Google Earth be used to access the size of the Earth?
To use Google Earth to access the size of the Earth, you can follow these steps:
1. Open the Google Earth application on your computer or mobile device. If you don't have it, you can download it from the Google Earth website.
2. Once you have opened Google Earth, you will see a satellite view of the Earth. You can navigate and zoom in/out using your mouse or touch controls.
3. To measure the size of the Earth, you need to use the measurement tool in Google Earth. Locate the toolbar at the top of the screen and click on the "Tools" menu.
4. In the drop-down menu, select the "Ruler" option. This tool allows you to measure distances, but we can also use it to measure the circumference of the Earth.
5. With the ruler tool activated, you can click on any point on the Earth's surface to start measuring. Place the initial point on one side of the Earth and then click on another point on the opposite side.
6. Google Earth will show you the distance between these two points in the ruler tool window. Take note of this value.
7. Next, you can multiply the measured distance by 360. This is because the Earth's circumference is about 360 times larger than any great circle distance across it.
8. Use a calculator or a spreadsheet to multiply the measured distance by 360.
9. The result will be an estimate of the Earth's circumference in the unit of measurement you used in Google Earth (e.g. kilometers, miles, etc.).
Note: Keep in mind that Google Earth is a digital representation of the Earth, and the measurements might have slight inaccuracies due to various factors like the curvature of the Earth, map projection used, and limitations of the tool itself.