Section 7 - Matter Flashcards
What ks the specific heat capacity of a material?
The amount of energy needed to raise the temperature of one kg of that material by 1 degree
What is the specific latent heat of a material?
The amount of energy needed to change the state of one kg of the material
At what point is absolute zero?
-273 °C
How do you convert from kelvin to Celsius?
Minus 273
What does a low spring constant of a spring mean?
The spring is easily stretched
What is the point called when a spring is permanently stretched?
Elastic limit
What is the point called when the relationship between force and extension is no longer linear?
Limit of proportionality
Why does fluid pressure increase with depth?
The weight of the particles above adds to the pressure
What causes an object to float?
If the upthrust acting on an object is equal to its weight
What causes upthrust?
The particles in the fluid colliding with object and pushing it up.
How does a gas create pressure?
Gas particles move around randomly. The more energy they nave the faster they move, so the higher chance they collide with the side of the container. When a particle collides with the side of the container, it will exert a force.
What happens to particles at absolute zero?
They stop moving
How are pressure and volume related?
They are inversely proportional to each other
Why does increasing the temperature of a gas inside a container increase pressure?
The more energy the particles have the more they move around at a faster speed. This increases the chance of the particles colliding with the side of the container and when they do they collide with more force.
Why does a bubble get larger as it rises in water?
As the bubble rises the pressure exerted on it decreases. This means the pressure outwards from the bubble is larger then that pushing inwards. The bubble will expand until both pressures reach an equilibrium.
