Cause and Effect

The first seat belts only went across a person's waist. These belts attached to the base of the seat in the car. These new belts held people in their seats. However, many people were still hurt in crashes.

The first seat belts only went across a person's waist. These belts attached to the base of the seat in the car. These new belts held people in their seats. However, many people were still hurt in crashes.

Tectonic plates have rough edges and are always moving. Usually, they move slowly. But there are times when the plates get stuck against each other. If that happens, pressure builds up. When the two plates finally get "unstuck," they release energy. Often, a small amount of energy is released. That will mean a small earthquake.

Tectonic plates have rough edges and are always moving. Usually, they move slowly. But there are times when the plates get stuck against each other. If that happens, pressure builds up. When the two plates finally get "unstuck," they release energy. Often, a small amount of energy is released. That will mean a small earthquake.

A blizzard is a winter storm with strong winds. The wind blows the snow so that it is hard to see. Most blizzards last at least three hours.

A blizzard is a winter storm with strong winds. The wind blows the snow so that it is hard to see. Most blizzards last at least three hours.