| Fluids and Viscosity | Mass and Volume | Density | Buoyancy | Pressure |
| 10 | 10 | 10 | 10 | 10 |
| 20 | 20 | 20 | 20 | 20 |
| 30 | 30 | 30 | 30 | 30 |
| 40 | 40 | 40 | 40 | 40 |
| 50 | 50 | 50 | 50 | 50 |
| Final Question | ||||
What is viscosity? What does it mean if something has a high viscosity?
What is viscosity? What does it mean if something has a high viscosity?
A fluid's internal resistance that prevents it from flowing. High viscosity=doesn't flow as easily.
Which has the higher viscosity? Orange juice or ketchup?
Which has the higher viscosity? Orange juice or ketchup?
Ketchup.
Which has the lower viscosity? Milk or honey?
Which has the lower viscosity? Milk or honey?
Milk
What is the effect of temperature on viscosity?
What is the effect of temperature on viscosity?
Increase in temperature= decrease in viscosity
What are the four points in the Particle Theory of Matter?
What are the four points in the Particle Theory of Matter?
1. All matter is made up of tiny particles. 2. Particles are always moving. 3. Particles have spaces between them. 4. Particles are attracted to each other.
What is mass and what unit is it measured in?
What is mass and what unit is it measured in?
The amount of matter in an object. Grams or Kilograms
What is volume? What unit is it measured in?
What is volume? What unit is it measured in?
The amount of space something takes up. mL or L
How do we measure volume of a solid?
How do we measure volume of a solid?
Put it in water and measure the difference? (Eureka!)
What effect does temperature have on volume?
What effect does temperature have on volume?
Higher temperature=greater volume
What is the difference between mass and weight? Which one changes on the moon?
What is the difference between mass and weight? Which one changes on the moon?
Mass is the amount of matter in an object, weight is the amount of matter multiplied by gravity. Weight can change. Mass cannot.
What is density?
What is density?
The amount of matter in a certain volume or certain space.
What unit is density measured in?
What unit is density measured in?
g/mL
Which has the higher density? 5g/60mL or 5g/35mL
Which has the higher density? 5g/60mL or 5g/35mL
5g/35mL
Why does hot air rise and cold air sink?
Why does hot air rise and cold air sink?
Hot air has a greater volume which means less density, so it "floats."
What happens to the density of a substance when the temperature increases?
What happens to the density of a substance when the temperature increases?
Density gets smaller
What is a buoyant force?
What is a buoyant force?
Force in the opposite direction to gravity
What does the swim bladder of a fish do?
What does the swim bladder of a fish do?
The fish can increase the amount of air in it, increasing it's volume, and the fish will rise.
The larger the volume (the more water displaced) the ______________ the buoyant force.
The larger the volume (the more water displaced) the ______________ the buoyant force.
Larger
What unit is used to measure weight?
What unit is used to measure weight?
Newtons
What does a fish need to do to sink?
What does a fish need to do to sink?
Release air from it's swim bladder (decrease it's volume)
If I poke two holes in a can, one higher than the other, which will have more pressure in the liquid that comes out?
If I poke two holes in a can, one higher than the other, which will have more pressure in the liquid that comes out?
Bottom hole
Pressures are identical as long as the levels of the liquid are equal. This is known as ________________'s Law
Pressures are identical as long as the levels of the liquid are equal. This is known as ________________'s Law
Pascal
What is the formula to calculate pressure?
What is the formula to calculate pressure?
Pressure=Force/Area
If I increase the area that I'm putting pressure on, but keep the force the same, will the pressure increase or decrease?
If I increase the area that I'm putting pressure on, but keep the force the same, will the pressure increase or decrease?
Decrease
What is the difference between a hydraulic system and a pneumatic system?
What is the difference between a hydraulic system and a pneumatic system?
Hydraulic-use liquids to transmit forces, pneumatic-use gases to transmit forces
How was Archimedes, the greek mathematician, able to prove the King's crown was not pure gold?
How was Archimedes, the greek mathematician, able to prove the King's crown was not pure gold?
He put a bar of pure gold (same mass as the crown) in the tub and it displaced less water than the crown. The crown displaced more water, meaning greater volume, and less density. If it was pure gold it would have the same density.
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