• Strong winds

• lots of rain

• tall waves

• Dark sky

People sometimes put metal rods on the top of houses. These protect the houses from lightning during thunderstorms. These rods are most helpful in places where there are lots of -

• thunderstorms.

• houses.

• metal.

• people.

Scientists tested four house roofs. They want to see which roof protected people best. They saw what happened to the roofs when the winds blew.

• A

• B

• C

• D

A lightning rod protects a building when lightning strikes it. The best way to decide if a lightning rod works correctly is to put it on a building and see if-

• the lightning rod does not break during a very strong thunderstorm.

• the building can use the lightning rod to make energy.

• the lightning rod is the tallest part of the building.

• lightning strikes the building but does not hurt the building.

During a storm, a large wave of water can move onto the land. The map shows how high the waves that come in with storms are. People can build walls to stop the waves. Which city needs a wall that is at least 5 meters tall?

• City A

• City B

• City C

• City D