Question: Johnny drove to the store with his father one cold and rainy night. They had only driven a short distance when the windows "fogged up" on the inside. What was the "fog"?
Reference answer: Condensed water vapor from the air inside the car.

Student answer: The fog was not fog. It was condensation.

Student answer: The fog on the inside window of the car was water vapor.

Student answer: The fog is called condensation. What caused this was the water vapor touching a cold surface.

Student answer: The fog was water vapor flying around in the air.

Student answer: Condensation.

Student answer: The fog was condensation.

Student answer: It was condensation.

Student answer: The fog was condensation.

Student answer: Fog is condition.

Student answer: The fog was condensation.

Student answer: The fog is condensation.

Student answer: The fog was condensation.

Student answer: It is called condensation.

Student answer: Fog is water vapor.

Student answer: The fog in the inside of the car was condensation.

Student answer: The fog was condensation.

Student answer: That fog was condensation.

Student answer: The fog is condensation.

Student answer: The fog was water vapor turning back into tiny water droplets in the process of condensation.

Student answer: What Johnny saw was condensation on the window.

Student answer: The fog was liquid.

Student answer: The fog was condensation.

Student answer: The fog is called condensation.

Student answer: The fog was condensation formed by cold water.

Student answer: It was not fog. It was condensation from the rain.

Student answer: It was water but it turned to a gas.

Student answer: The fog was condensation.

Student answer: The fog was condensation.

Student answer: It is water in the air that hit the cold window shield that is condensation.

Student answer: The fog is called condensation.

Student answer: While the rain was out one of them opened a window then they closed it.

Student answer: Condensation.

Student answer: Evaporation.

Student answer: The fog was rain.

Student answer: Water vapor.

Student answer: The fog was called condensation.

Student answer: The fog was the water vapor.

Student answer: Water vapor.

Student answer: The fog was water vapor that came down.

Student answer: Cloud.

Student answer: It was water vapor.

Student answer: The fog was water vapor, touching a cold surface, which was the window.

Student answer: The fog was condensation.

Student answer: Mist.

Student answer: Fog is some little raindrops on the window or some air on the window. When it is foggy, you cannot see very well.

Student answer: Condensation.

Student answer: Condensed water droplets.

Student answer: The fog was condensation on the window.

Student answer: Condensation.

Student answer: It was condensation.

Student answer: Condensation.

Student answer: Condensation.

Student answer: Water vapor.

Student answer: Water vapor.

Student answer: When it is cold, the windows fog up.

Student answer: Condensation.

Student answer: Condensation.

Student answer: Little rain drops.

Student answer: It was the atmosphere.

Student answer: Condensed water vapor.

Student answer: The fog was actually condensation.

Student answer: The fog was water that evaporated.

Student answer: It was water vapor.

Student answer: The fog was the humidity in the car. There was molecules in the air of the car and the molecules got less dense and wanted to get out of the car.

Student answer: Water vapor sitting on the windows.

Student answer: Moisture caused by warm moisture meeting cold moisture.

Student answer: The fog was condensation. See question 2.

Student answer: The fog was water vapor.

Student answer: It was condensation.

Student answer: The white misty stuff on the window.

Student answer: It is condensation that comes on when it is cold which is water vapor which is the rain turned into gas.

Student answer: The fog is water vapor.

Student answer: The fog happened because of condensation.

Student answer: It was because of the evaporation in the car.

Student answer: The fog was invisible droplets we in the car made.

Student answer: The fog was water vapor.

Student answer: A mix of cold and warm.

Student answer: The fog was the water vapor that was in the air.

Student answer: Condensation. The cold on the outside and the warm inside caused it to form.

Student answer: Water beads.

Student answer: The fog was condensation.

Student answer: The fog was condensation because the window is cold and condensation happens on cold surfaces.

Student answer: It was condensation, little droplets of water.

Student answer: Evaporation, condensation.

Student answer: Because condensation gas most of turned to water. Gas turning to water.

Student answer: Dry evaporation builds up fog. And rain and cold make fog.

Student answer: Water vapor evaporated into the air and when it set on the window, it condensed creating fog.

Student answer: Condensation.

Student answer: Heat and cold air mixed together.

Student answer: Evaporated water.

Student answer: It is because the cold air was evaporating and it had no opening so the air could not get out.

Student answer: It was steam.

Student answer: The fog was condensation.

Student answer: The fog on the window was water vapor.

Student answer: Evaporated cold water.

Student answer: The water vapor in the car was car temperature and it touched the cold window.

Student answer: The fog was water vapor.

Student answer: A hotter surface touched the windows. Since the windows are cold, it formed fog.

Student answer: Water vapor.

Student answer: I would say water vapor.