1.

2.

When a tornado threatens, you should open the windows.

3.

The two basic rules that must be remembered for when a tornado threatens are (choose two):

b. Go to the southwest corner of a basement.

c. Open the windows to equalize pressure.

d. Get into a car and escape the tornado.

e. Put as many walls between you and the 
tornado as possible.

f. Get out of a sturdy structure and lie flat in a ditch or ravine.

4.

Which tornado was the deadliest in U.S. history?

b. the Tri-State tornado (Missouri, Illinois, 
Indiana) of 1925

c. the Xenia, Ohio, tornado  of 1974

d. the Oklahoma City tornado of 1999