Density does not change because density is measured by Mass/Volume. So whether you're on earth, on the moon or floating in space, your density remains the same. Pressure, on the other hand, changes because it is defined as force per unit area (Force/Area). Your weight is the force here. As you approach the earth, the value of g increases, and so does the value of force.
Because of the atmosphere. Because it does not allow the air pressure to enter the earth.
Waves change direction as they enter or leave a lens due to refraction, which is the bending of light as it passes through a medium with a different optical density. This bending occurs because light waves travel at different speeds in different mediums, causing them to change direction at the interface.
The name of the effect is refraction. It occurs when light rays pass from one medium to another with a different density, causing the rays to change direction.
The vapor pressure of a substance increases with temperature. As the temperature rises, more molecules have enough energy to escape from the liquid phase and enter the gas phase, leading to an increase in vapor pressure.
As light waves enter water, they slow down due to the change in the medium's density. This change in speed causes the light waves to refract or change direction, bending towards the normal line. The extent of bending depends on the angle of incidence and the difference in the refractive indices of air and water.
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Light rays bend when they enter a new medium at an angle due to refraction, which is caused by the change in speed of light as it travels from one medium to another with a different optical density. This change in speed causes the light rays to change direction, leading to bending.
The mass of the Earth remains relatively constant because the amount of matter on Earth does not significantly increase or decrease. However, the Earth gains a small amount of mass each year from meteorites and space dust that enter the atmosphere.
Seismic waves increase in speed when they enter more rigid materials, such as solid rock or the Earth's mantle. This increase in speed is due to the higher elasticity and density of these materials, allowing the waves to propagate faster.
The center of the earth is called the core.
The pressure in the tissue surrounding the capillary, called interstitial fluid pressure, causes fluids to enter the venous side of the capillary due to the pressure gradient. This pressure helps to balance the forces of filtration and reabsorption in the capillary beds.
If the container is sealed and no gas is allowed to enter or exit, then the volume will not change. However, if the container is open and gas can enter or exit, then the volume may change depending on various factors such as temperature, pressure, or addition/removal of gas molecules.