carla makes a small cardboard boat and floats it in a tub of water. when she adds a drop of dish soap behind…

carla makes a small cardboard boat and floats it in a tub of water. when she adds a drop of dish soap behind the boat, the boat moves forward.\nwhich statement best explains what happened?\nthe soap increased the viscosity of the water behind the boat, allowing the water in front of the boat to flow more easily.\nthe soap reduced the surface tension behind the boat, causing both water molecules and the boat to be pulled forward.\nthe soap increased the kinetic energy of the water molecules behind the boat, causing both the molecules and the boat to move forward.\nthe soap formed an immiscible layer on the water, causing the soap to spread out and push the boat forward.

carla makes a small cardboard boat and floats it in a tub of water. when she adds a drop of dish soap behind the boat, the boat moves forward.\nwhich statement best explains what happened?\nthe soap increased the viscosity of the water behind the boat, allowing the water in front of the boat to flow more easily.\nthe soap reduced the surface tension behind the boat, causing both water molecules and the boat to be pulled forward.\nthe soap increased the kinetic energy of the water molecules behind the boat, causing both the molecules and the boat to move forward.\nthe soap formed an immiscible layer on the water, causing the soap to spread out and push the boat forward.

Answer

Brief Explanations:

Soap is a surfactant which reduces surface - tension. When surface - tension behind the boat is reduced, the higher surface - tension in front pulls the boat forward.

Answer:

The soap reduced the surface tension behind the boat, causing both water molecules and the boat to be pulled forward.