Locating the Epicenter with Triangulation

The video tutorial guides students through the process of drawing circles and ellipses using a shapes tool, with a focus on constructing lines and adjusting ellipses. It explains how to identify an epicenter by drawing circles around New York and using triangulation to find a convergence point. The tutorial concludes with instructions on completing discussion questions and offers extra credit opportunities.

What is the first step in drawing circles using the shapes tool?

• Using a compass

• Drawing a triangle

• Scaling out a line

• Inserting a rectangle

How should the major axis of the ellipse be adjusted?

• It should be shorter than the line

• It should be half the length of the line

• It should be longer than the line

• It should match the length of the line

What is the purpose of drawing multiple circles in this exercise?

• To draw a map

• To create a pattern

• To identify the epicenter

• To measure distances

Why is triangulation important in locating the epicenter?

• It helps in drawing perfect circles

• It narrows down the possible locations

• It increases the number of possibilities

• It eliminates the need for a map

How many circles are needed to accurately determine the epicenter?

• Four

• Two

• Three

• One

What should you do if your circles form a small triangle instead of a single point?

• Ignore the triangle

• Put an X through the triangle

• Draw a larger circle

• Erase and start over

What is the significance of the 1200 kilometer measurement in the exercise?

• It is the area of the circle

• It is the circumference of the circle

• It is the radius of the circle

• It is the diameter of the circle

What should students focus on after completing the circle drawing?

• Revising the procedure

• Calculating distances

• Answering discussion questions

• Drawing more circles

What is the optional task mentioned for extra credit?

• Drawing additional circles

• Creating a presentation

• Completing procedure B

• Writing an essay

What should be done with the completed work before leaving?

• Discard it

• Share it with peers

• Submit it

• Review it