HW 5.4: Intro to Pressure

What is the formula for pressure?

• Pressure = Area ÷ Force

• Pressure = Force × Area

• Pressure = Force ÷ Area

• Pressure = Force + Area

What causes pressure in fluids?

• The weight of the fluid

• The movement of solid objects in the fluid

• The collisions of particles with their surroundings

• The attraction between fluid particles

What do we call the type of pressure exerted by gases and liquids?

• Atmospheric pressure

• Hydraulic pressure

• Fluid pressure

• Surface tension

Which two factors determine the total pressure of a gas?

• The size of the container and the type of gas

• The number of collisions and the energy of each collision

• The weight of the gas and its color

• The shape of the container and the amount of light

How does increasing temperature affect gas pressure?

• It decreases pressure by slowing down particles

• It has no effect on pressure

• It increases pressure by making particles move faster and collide more often

• It decreases the number of collisions

What happens when the concentration of gas particles increases in a fixed volume?

• Pressure increases because there are more collisions

• Pressure decreases because the particles spread out

• Temperature decreases

• The volume of the container increases

How does decreasing the volume of a container affect gas pressure?

• Pressure decreases because particles have more space

• Pressure increases because particles collide more often

• Pressure stays the same

• Temperature decreases

What happens in a flexible container, like a balloon, when gas temperature increases?

• The balloon expands instead of pressure increasing

• The balloon shrinks

• The gas particles stop moving

• The concentration of the gas decreases

Tags

NGSS.MS-PS1-4

Why do gas particles move in random directions?

• They are affected by gravity

• They are constantly colliding and rebounding

• They are pushed by air currents

• They are attracted to the walls of the container

Tags

NGSS.HS-PS3-2

Why does pressure inside a balloon not increase indefinitely as more gas is added?

• The gas particles slow down

• The balloon expands instead, balancing the pressure

• The gas particles disappear

• The number of collisions decreases