Background: All fluids exert pressure like the air inside a tire. The particles of fluids are constantly moving in all directions at random. As the particles move, they keep bumping into each other and into anything else in their path. These collisions cause pressure, and the pressure is exerted equally in all directions. When particles are crowded together in one part of their container, they quickly spread out to fill their container. They always move from an area of higher pressure to an area of lower pressure. That’s why air entering a tire quickly spreads throughout the tire.

Situation: Mark hadn't ridden his bike in a while. When he went out to the garage he saw the tire was flat He grabbed the tire pump and attached the hose to the tire. H pulled on the plunger of the pump the pushed down and listened as air went into the tire. He umped up and down a few more time until the tire was fully inflated and then put the pump away

Question: As Mark pushed on the plunger did the pressure in the pump increase or decrease?

Situation: Mark hadn't ridden his bike in a while. When he went out to the garage he saw the tire was flat He grabbed the tire pump and attached the hose to the tire. H pulled on the plunger of the pump the pushed down and listened as air went into the tire. He umped up and down a few more time until the tire was fully inflated and then put the pump away

Question: As Mark pushed on the plunger was the pressure higher in the pump or the tire?

Situation: Mark hadn't ridden his bike in a while. When he went out to the garage he saw the tire was flat He grabbed the tire pump and attached the hose to the tire. H pulled on the plunger of the pump the pushed down and listened as air went into the tire. He umped up and down a few more time until the tire was fully inflated and then put the pump away

Question: As Mark pushed on the plunger was the pressure lower in the pump or the tire?

Situation: Mark hadn't ridden his bike in a while. When he went out to the garage he saw the tire was flat He grabbed the tire pump and attached the hose to the tire. H pulled on the plunger of the pump the pushed down and listened as air went into the tire. He umped up and down a few more time until the tire was fully inflated and then put the pump away

Question: where did the air entering the tire come from?

Situation: Mark hadn't ridden his bike in a while. When he went out to the garage he saw the tire was flat He grabbed the tire pump and attached the hose to the tire. H pulled on the plunger of the pump the pushed down and listened as air went into the tire. He umped up and down a few more time until the tire was fully inflated and then put the pump away

Question: Did the new air stay near the hose or spread out?

Situation: Mark hadn't ridden his bike in a while. When he went out to the garage he saw the tire was flat He grabbed the tire pump and attached the hose to the tire. H pulled on the plunger of the pump the pushed down and listened as air went into the tire. He umped up and down a few more time until the tire was fully inflated and then put the pump away

Question: Was there a pattern to how the air moved or was it random?

Situation: Jane was almost done decorating the yard for her son's birthday. All that was left was to blow up the balloons. She had bought a helium tank so she grabbed a balloon and attached it to the nozzle. As soon as she flipped the tank on she could hear the gas leaving the tank. Soon the balloon was full so she tied it off. Only 19 to go!

Question: What filled the balloon

Situation: Jane was almost done decorating the yard for her son's birthday. All that was left was to blow up the balloons. She had bought a helium tank so she grabbed a balloon and attached it to the nozzle. As soon as she flipped the tank on she could hear the gas leaving the tank. Soon the balloon was full so she tied it off. Only 19 to go!

Question: Did the helium spread out in the baloon or clump together?

Situation: Jane was almost done decorating the yard for her son's birthday. All that was left was to blow up the balloons. She had bought a helium tank so she grabbed a balloon and attached it to the nozzle. As soon as she flipped the tank on she could hear the gas leaving the tank. Soon the balloon was full so she tied it off. Only 19 to go!

Question: Did the helium spread out in the balloon or clump together?

Situation: Jane was almost done decorating the yard for her son's birthday. All that was left was to blow up the balloons. She had bought a helium tank so she grabbed a balloon and attached it to the nozzle. As soon as she flipped the tank on she could hear the gas leaving the tank. Soon the balloon was full so she tied it off. Only 19 to go!

Question: where was the air pressure highest?

Situation: Jane was almost done decorating the yard for her son's birthday. All that was left was to blow up the balloons. She had bought a helium tank so she grabbed a balloon and attached it to the nozzle. As soon as she flipped the tank on she could hear the gas leaving the tank. Soon the balloon was full so she tied it off. Only 19 to go!

Question: where was the air pressure lowest?

Situation: Bob was hoping to help the kids cool off on a really hot day. He decided to fill some water balloons for them to throw. As he was filling the balloons he watched the water run from the faucet and spread out inside each balloon. The balloons quickly went from flat to fully expanded. When Bob was almost done filling the balloons his wife asked him a question he looked away from the balloon he was filling to talk to her. All of a sudden Bob heard a popping sound and felt water splashing all over his shirt.

Question: What was bumping into the sided of the baloon?

Situation: Bob was hoping to help the kids cool off on a really hot day. He decided to fill some water balloons for them to throw. As he was filling the balloons he watched the water run from the faucet and spread out inside each balloon. The balloons quickly went from flat to fully expanded. When Bob was almost done filling the balloons his wife asked him a question he looked away from the balloon he was filling to talk to her. All of a sudden Bob heard a popping sound and felt water splashing all over his shirt.

Question: Was the water pressure increasing or decreasing as the balloon filled.

Situation: Bob was hoping to help the kids cool off on a really hot day. He decided to fill some water balloons for them to throw. As he was filling the balloons he watched the water run from the faucet and spread out inside each balloon. The balloons quickly went from flat to fully expanded. When Bob was almost done filling the balloons his wife asked him a question he looked away from the balloon he was filling to talk to her. All of a sudden Bob heard a popping sound and felt water splashing all over his shirt.

Question: Were the water particles move awayfrom or towards each other as the went tnto the ballon?

Situation: Bob was hoping to help the kids cool off on a really hot day. He decided to fill some water balloons for them to throw. As he was filling the balloons he watched the water run from the faucet and spread out inside each balloon. The balloons quickly went from flat to fully expanded. When Bob was almost done filling the balloons his wife asked him a question he looked away from the balloon he was filling to talk to her. All of a sudden Bob heard a popping sound and felt water splashing all over his shirt.

Question: Was the water pressure in the balloon highest when the water started entering it or right before it popped.

Situation: Bob was hoping to help the kids cool off on a really hot day. He decided to fill some water balloons for them to throw. As he was filling the balloons he watched the water run from the faucet and spread out inside each balloon. The balloons quickly went from flat to fully expanded. When Bob was almost done filling the balloons his wife asked him a question he looked away from the balloon he was filling to talk to her. All of a sudden Bob heard a popping sound and felt water splashing all over his shirt.

Question: Di9d increasing or decreasing pressure cause the balloon to pop?

Situation: Bob was hoping to help the kids cool off on a really hot day. He decided to fill some water balloons for them to throw. As he was filling the balloons he watched the water run from the faucet and spread out inside each balloon. The balloons quickly went from flat to fully expanded. When Bob was almost done filling the balloons his wife asked him a question he looked away from the balloon he was filling to talk to her. All of a sudden Bob heard a popping sound and felt water splashing all over his shirt.

Question: Is the pressure higher in an empty or full balloon?

Situation: Bob was hoping to help the kids cool off on a really hot day. He decided to fill some water balloons for them to throw. As he was filling the balloons he watched the water run from the faucet and spread out inside each balloon. The balloons quickly went from flat to fully expanded. When Bob was almost done filling the balloons his wife asked him a question he looked away from the balloon he was filling to talk to her. All of a sudden Bob heard a popping sound and felt water splashing all over his shirt.

Question: Is the pressure lower in an empty or full balloon?

Situation: Bob was hoping to help the kids cool off on a really hot day. He decided to fill some water balloons for them to throw. As he was filling the balloons he watched the water run from the faucet and spread out inside each balloon. The balloons quickly went from flat to fully expanded. When Bob was almost done filling the balloons his wife asked him a question he looked away from the balloon he was filling to talk to her. All of a sudden Bob heard a popping sound and felt water splashing all over his shirt.

Question: Was the whater pressure higher in the faucet or the balloon?

Situation: Bob was hoping to help the kids cool off on a really hot day. He decided to fill some water balloons for them to throw. As he was filling the balloons he watched the water run from the faucet and spread out inside each balloon. The balloons quickly went from flat to fully expanded. When Bob was almost done filling the balloons his wife asked him a question he looked away from the balloon he was filling to talk to her. All of a sudden Bob heard a popping sound and felt water splashing all over his shirt.

Question: Was the whater pressure lower in the faucet or the balloon?

Situation: Bob was hoping to help the kids cool off on a really hot day. He decided to fill some water balloons for them to throw. As he was filling the balloons he watched the water run from the faucet and spread out inside each balloon. The balloons quickly went from flat to fully expanded. When Bob was almost done filling the balloons his wife asked him a question he looked away from the balloon he was filling to talk to her. All of a sudden Bob heard a popping sound and felt water splashing all over his shirt.

Question: Would pressure in the balloon increase or decrease if water was let out?