Main Idea

Front

Benjamin Franklin's contributions to Philadelphia include starting its first hospital, fire department, and public library.

Back

Benjamin Franklin worked hard to make his city a great place to live.

Front

Benjamin Franklin's experiment with a kite during a thunderstorm showed that lightning is electricity.

Back

Benjamin Franklin proved that lightning was electricity.

Front

Benjamin Franklin invented many things in the late 1700s, including the lightning rod, Franklin stove, and bifocals.

Back

Benjamin Franklin was a great inventor.

Front

Events that rapidly change the Earth's surface include volcanoes and earthquakes.

Back

Several events can change the Earth's surface.

Front

Most volcanoes are part of the "Ring of Fire."

Back

Most volcanoes are part of the "Ring of Fire."

Front

Causes of earthquakes:

Back

Earthquakes occur when Earth's crust plates shift.

Front

Scientists measure earthquake intensity using the Richter scale.

Back

Scientists can measure the intensity of an earthquake.

Front

Floods can cause tremendous damage, ruining houses, roads, and buildings, and leaving mud and debris behind.

Back

Floods can cause a lot of damage.

Front

Main idea: Matt faced his fear of the diving board.

Back

Matt conquered his fear of the diving board.

Front

Kate forgets the words to her song and is surprised when everyone claps.

Back