1. Design an experiment to test the air pressure at different altitudes. What do you expect to observe? 2. When you go to school in the morning, the weather is sunny and warm. By lunchtime, it is...

1. Design an experiment to test the air pressure at different altitudes. What do you expect to observe?

2. When you go to school in the morning, the weather is sunny and warm. By lunchtime, it is cool, windy, and rainy. The weather front shown here has moved in. What kind of weather front is this—a cold front or a warm front?