What was the Revolutionary War also known as?

• American War of Independence

• Civil War

• World War I

• French Revolution

In which year did the Battle of Bunker Hill take place?

• 1775

• 1777

• 1781

• 1783

Which battle convinced France to join the war on the side of the American colonies?

• Battle of Saratoga

• Battle of Bunker Hill

• Battle of Yorktown

• Battle of Valley Forge

Who was the leader of the American army during the winter at Valley Forge?

• General George Washington

• General Cornwallis

• General Lafayette

• General Burgoyne

What was the outcome of the Battle of Yorktown in 1781?

• American and French forces surrounded the British, leading to their surrender

• The British won and continued to control the colonies

• The battle ended in a stalemate

• The American forces retreated

What do dolphins use their pectoral flippers for?

• Catching fish with their flippers.
• Steering and maneuvering in the water.
• Communicating with other dolphins.
• Swimming at high speeds.

• How do dolphins use their flukes when they "breach," or leap from the water?

• Dolphins use their flukes to balance while diving.
• Dolphins flap their flukes to create waves.
• Dolphins use their flukes to push against the water, generating thrust to leap out of the water.
• Dolphins use their flukes to swim faster underwater.

• What is the purpose of the muscular flap over a dolphin's blowhole?

• To help dolphins swim faster.
• To assist in echolocation.
• To regulate body temperature.
• To prevent water from entering the lungs while underwater.

• Besides keeping them warm, what is another purpose of blubber?

• Energy storage
• Facilitating buoyancy
• Protection from predators
• Insulation against water

• Why is echolocation especially helpful for a dolphin in dark or murky water? 

• Echolocation is used by dolphins to communicate with each other.
• Dolphins rely on their eyesight to navigate in dark waters.
• Echolocation helps dolphins to swim faster in clear water.
• Echolocation helps dolphins navigate and find food in dark or murky water where visibility is poor.