High pressure areas usually mean ...

• Good weather
• Bad weather

Low pressure areas usually mean

• Good weather
• Bad weather

Warm fronts are usually drawn with what shape?

• Triangles
• Squares
• Half circles

Cold fronts are usually drawn with what shape?

• Triangles
• Squares
• Half circles

"Thick" Lava has high amounts of what inside?

• Carbon
• Silica
• Pebbles
• Clay

True or false, thick lava moves so slow over even ground you could outwalk it.

• True
• False

Seismometers are used to measure what?

• Volcanic activity
• Seismic waves
• Avalanche intensity
• Hurricane force

The Saffir-simpson scale is used to measure what?

• Volcanic activity
• Hurricane wind strength
• Earthquake intensity
• Tornado wind strength 

The Richter scale is used to measure what?

• Volcanic activity
• Hurricane wind strength
• Earthquake intensity
• Tornado wind strength

The Fujita scale is used to measure what?

• Volcanic activity
• Hurricane wind strength
• Earthquake intensity
• Tornado wind strength