Force and Pressure

Fluids can also include__ and__. 

• solids and liquids
• solids and gases
• liquids and gases
• liquids

What is the equation used to calculate pressure?

• pressure= force/mass
• pressure =mass/volume
• pressure=area/force
• pressure=force/area

Look at the pressure triangle. How do we calculate the area?

• f ÷ a
• f x p
• p x f
• f ÷ p

When you increase your depth under water, the water pressure on your body

• increases

• decreases

• stays the same

Convert 10 kg to Newtons

• 0.098 N
• 4.5 N
• 100 N
• 98 N

Tags

NGSS.MS-PS2-4

How can we increase the gas pressure inside a sealed container?

• Increase the number of particles inside the container
• Increase the temperature
• Decrease the volume of the container
• All of these

A person wearing steel toe capped boots and a person wearing stilleto heels stand on a wooden floor. They both have the same weight. Which person exerts a greater pressure on the floor?

• The person wearing the boots because the boots have a larger surface area in contact with the floor
• The person with the stiletto heels because they have a larger surface area in contact with the floor
• The person wearing the boots because the boots have a smaller surface area in contact with the floor 
• The person with the stiletto heels because they have a smaller surface area in contact with the floor

A woman has 4 type of shoes. Which will exert the greatest pressure on the ground when she wears them?

• 
• 
• 
• 

Why is the atmospheric pressure at a higher altitude lower?

• Temperature is high

• Density of air is high

• The layer of air is thin

• The volume of air does not change

Diagram below shows an apple is floating in a beaker of water. Which of the following statement describes the buoyant force correctly?

• The buoyant force equals to the mass of the water displaced

• The buoyant force equals to the weight of the apple

• The buoyant force equals to the volume of the water displaced

• The buoyant force equals to the mass of the apple