Incredible Icebergs Reading A-Z

Icebergs have frightened sailors for centuries because ___.

• they have appeared out of nowhere

• they have grown larger over the centuries

• they have formed in warm and cold waters

• they have sunk numerous ships

Ice sheets and glaciers form in Antarctica and the Arctic after ___________.

• ice breaks

• ice melts

• snow compacts

• snow melts

Approximately how much of an iceberg floats above the water's surface?

• 50 percent

• 10 percent

• 40 percent

• 20 percent

How do Antarctic icebergs compare to Arctic icebergs?

• Antarctic icebergs are smaller and formed from flat sheets of ice.

• Antarctic icebergs are larger and formed from flat sheets of ice.

• Antarctic icebergs are smaller and travel down valleys to the sea.

• Antarctic icebergs are larger and travel down valleys to the sea.

What makes a green iceberg unique?

• It contains ice that has melted and frozen again.

• It contains old ice that has pressed out the air bubbles.

• It contains organic matter frozen into the ice.

• It contains ice from the coldest parts of the Earth.

When a glacier calves, it ____________________.

• breaks off and separates from an ice mass

• forms crystal below the sea's surface

• floats into warm water and begins to melt

• melts and refreezes to form blue stripes on the surface

What is the purpose of the International Ice Patrol (IIP)?

• to photograph icebergs and publish the pictures in a monthly magazine

• to record the number of icebergs there are in the world

• to study icebergs and the wildlife that live on them

• to monitor the Grand Banks for icebergs

Based on this text, if an iceberg sank a ship in the Grand Banks, what conclusion might you draw about the captain of the ship?

• The captain did not follow the warnings of the IIP.

• The captains took a shortcut through waters near Southern California.

• The captain was trying to carry icebergs chips across the ocean.

• The captain did not take the shortcut through the Grand Banks.

What is the author's point of view about icebergs?

• Icebergs create both worry and wonder.

• Icebergs create much concern for sailors at sea.

• Icebergs result in more benefits than damages.

• Icebergs are easy to track because the number of them stays the same each year.

The movement and melting of icebergs can cause __________.

• air temperatures to cool

• sea levels to rise

• less calving

• more home for Arctic seals