A1.1 Water LO 6

Which property of water is responsible for the high buoyancy that allows less dense materials to float?

• High specific heat capacity

• High thermal conductivity

• High density as a liquid

• Low viscosity

Why is ice less dense than liquid water?

• Water molecules are closer together in ice.

• Ice has lower thermal conductivity.

• Hydrogen bonding creates a lattice structure in ice.

• Ice has higher viscosity than water.

How does the specific heat capacity of water compare to that of air?

• Water has a lower specific heat capacity.

• Water has a higher specific heat capacity.

• Water and air have the same specific heat capacity.

• Water’s specific heat capacity varies with temperature more than air’s.

What is the primary reason seal pups stay in snow lairs?

• • High buoyancy of water

• Low viscosity of air

• • Low thermal conductivity of snow

• • High thermal conductivity of air

Which physical property of water allows ringed seals to swim efficiently?

• High viscosity

• High thermal conductivity

• Low specific heat capacity

• Low viscosity

How does the buoyancy of water benefit ringed seals?

• It reduces drag while swimming.

• It helps them retain body heat.

• It makes them less dense and helps them float.

• It increases the thermal conductivity of their environment.

What is one reason why water is an excellent insulator compared to air?

• Water has a high specific heat capacity.

• Water has low thermal conductivity.

• Water has high buoyancy.

• Water has low viscosity.

How do black-throated loons minimize drag while swimming in water?

• By having low-density feathers

• By having hydrodynamic shapes

• By increasing their buoyancy

• By reducing their thermal conductivity

Why are black-throated loons able to generate lift in less buoyant air?

• They have high-density feathers.

• They have large wings.

• They have hydrophobic feathers.

• They have streamlined shapes.

Which property of water affects the heat loss from a seal’s body when swimming?

• High viscosity

• High buoyancy

• High thermal conductivity

• High specific heat capacity