# Deep Impact

## What are impact craters?

There are 2 parts to this activity which should both be carried out prior to the Deep Impact mission. The aim of this activity is to learn about the specific features of craters.

## Deep Impact on Earth

In this activity students will work out how long it takes light to travel from comet Tempel 1 to Earth and how long after the collision in the Deep Impact mission we will see this event.

**Objectives**

Students will:

## Impactor Speed

The aim of this activity is to use vectors and Pythagorasâ€™ theorem to work out the speed at which an impactor hits a comet.

## Deep Impact Collision Energy

The aim of this activity is to calculate the kinetic energy of an impact and to learn how the kinetic energy changes when the weight of an impactor is altered.