Tropical cyclones are classified by form and intensity.Which system does not have closed isobars（）.

The wind is（）and decreasing.

You have determined that you are in the right semicircle of a tropical cyclone in the Northern Hemisphere.What action should you take to avoid the storm（）.

Which condition indicates that you are in a hurricane’s dangerous semicircle in the Northern hemisphere（）.

Two well-developed high pressure areas may be separated by a（）.

MIST is caused by（）.

The direction of prevailing winds in the Northern hemisphere is caused by the（）.

When a tornado moves over the water from land it is called a（）.

When a hurricane passes into high latitudes over colder water and the source of heat is disrupted，the storm assumes the characteristics of（）.

In the Northern Hemisphere a wind is said to veer when the wind（）.