Place the following events in chronological order: 1. Event 1
Internal combustion engine invented in 1876
2. Event 2
Electric light bulb invented in 1879
3. Event 3
Dynamite invented in 1869
4. Event 4
First gasoline powered tractor invented in 1892
5. Event 5
First transcontinental railroad completed in 1869

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.