Ice age cut massive channels under North Sea

Scientists have detailed the massive undersea channels formed by melting ice sheets at the end of the last Ice Age. Using 3D imaging, they revealed hundreds of channels under the North Sea, matching areas once covered by ice. These channels were carved by powerful meltwater rivers. Researchers used sonic equipment to map the sea floor, providing data to understand and predict the behavior of current ice sheets in Greenland and Antarctica.

What geological feature was created by the melting of ice sheets at the end of the last Ice Age?

• Desert dunes

• Undersea channels

• Volcanic craters

• Mountain ranges

How did scientists map the channels under the North Sea?

• Using satellite imagery

• By diving and taking photographs

• With sonic equipment on boats

• Through underwater drones

What role did meltwater rivers play in the formation of undersea channels?

• They eroded the channels into the bedrock

• They evaporated, leaving channels behind

• They deposited sediment to form channels

• They froze to create ice channels

What is the significance of understanding the behavior of melting ice sheets?

• To predict the behavior of Greenland and Antarctic ice sheets

• To predict future volcanic eruptions

• To forecast weather patterns

• To understand ocean currents

What technology is used to create 3D images of features under the sea floor?

• Magnetic resonance imaging

• Sonic equipment

• Thermal imaging

• Laser scanning