What causes an Ice Age?

Answer 1

-Global Warming

-Pollution

-Other human activities

However, as this ground we are standing on is totally unpredictable, so is the weather around us. We may not fully predict what is going to happen during the 22nd century, but at least we can prepare what is going to happen to us for another 90 years.

Answer 2

Scientists believe that Earth's orbit moved farther from the sun. Summers were too cold to melt ice and snow.

Along with Earth's orbit we are also on an angle. A one degree change of the angle could cause the ice ages. In the last 150 million years, there are believed to have been 6 ice ages. Scientists believe the reason Earth's orbit moved away from the sun is because of particles in space that hit against the atmosphere causing Earth to tilt in a different way by as little as 1 degree.

Scientists now believe that we, as people, will be the reason causing the next ice age rather than natural occurances.
Theories for the cause of Ice Age include Continental Drift Theory, Change in Elevation Theory, Continental and Crustal Displacement Theories, and other miscellaneous theories.

Answer 3

Ice Ages are caused by variations in Earth's orbit and axial tilt, which affect the amount and distribution of solar radiation reaching the planet. These changes can lead to periods of cooler temperatures and ice sheets expanding over much of the Earth's surface. Other factors such as volcanic eruptions and changes in greenhouse gas concentrations can also contribute to the onset and duration of an Ice Age.