## What is the difference between specific gravity and density?

Density is defined as mass per unit volume. It has the SI unit kg m3 or kg/m3 and is an absolute quantity. Specific gravity is the ratio of a material’s density with that of water at 4 °C (where it is most dense and is taken to have the value 999.974 kg m3). It is therefore a relative quantity with no units.

## What property Oil makes it float on water?

What property of oil makes it float on water? Density. Oil is less dense than water; therefore, it can float on water. Why would heating the gas in a hot air balloon make the balloon rise?

## What is the difference between vapor density and specific gravity quizlet?

Vapor Density measures the weight of a gas or vapor in air, using 1 as the weight of normal outside air. Specific gravity measures the weight of a liquid or solid in water, using 1 as the weight of normal water.

## What is the difference between density and mass quizlet?

The density of a substance is the mass of the substance per volume unit and has units such as kg/L, where mass has units of kg and volume has the units L. The density of a substance is independent of the amount of the substance, while mass depends on the amount of the substance.

## Why does oil rise above water?

Oil is less dense than water, so 1 cubic cm of oil weighs less than 1 cubic cm of water. Therefore, the upward buoyancy force on the oil, which is equal to the weight of water displaced, is greater than the downward force of gravity on the oil, also known as the weight of the oil.

## Does alcohol float on water?

Alcohol is less dense than water so spirits can float on top of water or juices. They don’t mix because, unless they are stirred up, natural mixing of fluids is actually a very slow process.

## What happens to the pressure in all parts of a confined fluid when the pressure in one part is increased?

What happens to the pressure in all parts of a confined fluid if the pressure in one part is increased? The pressure everywhere increases by the same amount. A change in pressure at any point in an enclosed fluid at rest is transmitted undiminished to all points in the fluid.

## Why do we say that a spring is elastic?

A weight hanging on a spring stretches the spring. An additional weight would stretch it further. If the weights are removed, the spring returns to its original length. Therefore, we say that the spring is elastic.

## How would the block’s acceleration change if you doubled the mass of the block but kept the rocket’s force the same?

If the net force acting on an object doubles, its acceleration is doubled. If the mass is doubled, then acceleration will be halved.

## What is the relationship between liquid pressure and density?

Pressure and Density Relationship

When pressure increases, density increases. When the pressure decreases, density decreases.

## What causes atmospheric pressure quizlet?

What causes atmospheric pressure? Atmospheric pressure is caused by the weight of air, just as water pressure is caused by the weight of water. You just studied 13 terms!

## What is the relationship between liquid pressure and the depth of a liquid and also between liquid pressure and density?

Answer. Answer: Pressure due to the weight of a liquid of constant density is given by p=ρgh p = ρ g h , where p is the pressure, h is the depth of the liquid, ρ is the density of the liquid, and g is the acceleration due to gravity.

## Why does pressure increase when density increases?

Why does density increase pressure? Pressure within a liquid depends only on the density of the liquid, the acceleration due to gravity, and the depth within the liquid. The pressure exerted by such a static liquid increases linearly with increasing depth.

## What is the connection between gas density and gas pressure?

Gas density is a function of the pressure and temperature conditions for the gas. Due to its high compressibility, gas can change its volume significantly with change in pressure. Therefore, density changes (at low pressure) can be significant.

## How does temperature and pressure affect density?

Density is directly proportional to pressure and indirectly proportional to temperature. As pressure increases, with temperature constant, density increases. Conversely when temperature increases, with pressure constant, density decreases.

## How does air temperature affect air pressure?

Warm Temperatures

Warm air causes air pressure to rise. When air molecules collide, they exert force on each other. When gas molecules are heated, the molecules move more quickly, and the increased velocity causes more collisions. As a result, more force is exerted on each molecule and air pressure increases.

## What is the relationship between air temperature and air density?

The volume and density of air change with changes in temperature. As the temperature of air increases, its volume increases and its density decreases. As the temperature of air decreases, its volume decreases and its density increases.

## What happens to density when temperature increases?

When more temperature increases, density reduces. When the temperature decrease, density increases.

## How does temp affect gas?

Charles’ law (Gay-Lussac’s law)

This law states that the volume and temperature of a gas have a direct relationship: As temperature increases, volume increases when pressure is held constant. Heating a gas increases the kinetic energy of the particles, causing the gas to expand.

## Does warm air have high or low pressure?

Warm air is less dense and has a lower pressure associated with it. As the sun heats the ground, the air near the ground warms. Remember, heat is less dense than cold air so the warm air will rise.

## How does temperature and air pressure play a role in creating wind?

Warm air rises, creating a low pressure zone; cool air sinks, creating a high pressure zone. Air that moves horizontally between high and low pressure zones makes wind. The greater the pressure difference between the pressure zones the faster the wind moves.

## What factors do you think are affecting the gas inside the hot air balloon?

The pressure inside the hot air balloon is affected by temperature. As the molecules heat up, they move faster and strike the inside wall of the balloon harder. This increased motion of the gas particles increases the force on an area of the balloon, producing a rise in the pressure.