Why does a satellite in a higher orbit move more slowly and take a longer amount of time to complete an orbit?
When a satellite is in orbit, there is a gravitational pull from the planet it is orbiting. This force is constantly pulling the satellite towards the center of the planet. The reason the satellite doesn't fall straight down to the planet is because of its velocity.
Satellites that are low to the planet have to travel very quickly to resist the pull of gravity. Therefore some can orbit the planet in as little as 90 minutes! A satellite in high orbit moves more slowly and takes a longer time to orbit as the gravitational pull isn't as strong so they don’t need to move really fast. Due to them being further away from the planet they have longer distance to travel to complete a full orbit. Therefore it takes about 24 hours for a satellite in high orbit to complete a full orbit.
Satellites that are low to the planet have to travel very quickly to resist the pull of gravity. Therefore some can orbit the planet in as little as 90 minutes! A satellite in high orbit moves more slowly and takes a longer time to orbit as the gravitational pull isn't as strong so they don’t need to move really fast. Due to them being further away from the planet they have longer distance to travel to complete a full orbit. Therefore it takes about 24 hours for a satellite in high orbit to complete a full orbit.