How does weight affect density?

The effect of weight and of weight change on bone mineral density was in general much less in men than in women. Our results suggest that the strong effect of weight on bone mineral density is due to load on weight-bearing bones in both sexes.

The density of an object or quantity of matter is its mass divided by its volume. ... In some cases, materials made of atoms with a lower atomic weight have a greater density than those with a higher atomic weight, due to the atoms being more tightly packed.

Density = Mass/Volume, which means that density is how heavy an object is compared to its size – so how closely its molecules are “packed” together. ... It has a higher density. Density = Mass/Volume also means that the larger the volume of an object compared to its mass, the less dense it is.

Temperature Affects Density When the same amount of water is heated or cooled, its density changes. When the water is heated, it expands, increasing in volume. ... The warmer the water, the more space it takes up, and the lower its density.

Density and Volume are inversely proportional to each other. ... When density increases, volume decreases. When volume increases, density decreases.

Density and temperature As the temperature increases, most materials expand or increase their volume. This results in a decrease in density. Likewise, when the temperature goes down, the density usually becomes greater.

The shape, weight, volume, density, porosity and water displacement also factor in to its floating ability. A steel boat, for example, will float while a steel bar will sink because of the density compared to the amount of water and also because of the form/shape the object is in.

In other words, the size or amount of a material/substance does not affect its density. 3. Does temperature affect density?

The size, mass, and arrangement of atoms affect the density of a substance.

Pressure and temperature are the two factors that have the greatest affect on density. Mass and volume are the variables we measure to calculate density. Size and shape have no affect on density. Objects that are the same substance always have the same density, regardless of size and shape.

Along with healthy body weight, exercise has other physical health benefits. It increases cardiovascular functioning, which reduces the risk for certain diseases like heart disease, cancer, and diabetes. Exercise can also positively affect bone density, muscle strength, and joint mobility.

Low bone mineral density (BMD) is a major risk factor for osteoporosis and its related fractures [3]. Relationship between body mass index (BMI), weight, height, and BMD was reported for many populations [4–6]. Body weight or BMI has been found to be inversely related to the risk of osteoporotic fracture [3, 7].

Increasing density reduced individual plant growth and productivity. However, in per unit land area, there was higher total dry matter production, earlier and more abundant foliage and fruiting, but not a proportional increase of economic yield and earliness.

If the ball's density is equal to or less than the density of the water, the ball will float. Answer: The density of the bowling ball is greater than the density of the displaced water, thus the bowling ball will not float. The bowling ball sinks in this water.15 Sep 2011

In general, liquids tend to get "thinner" when their temperature increases. For example, honey and oil tend to flow better at higher temperatures. Therefore, increasing temperature decreases viscosity. ... Therefore, increasing temperature decreases density.

Two things affect density: 1) thermal energy and 2) pressure. A substance can change density by increasing or decreasing thermal energy and/or by increasing or decreasing pressure. Adding pressure causes a substance's particles to squeeze together or become more compact, which increases it's density.

Changing the shape of an object will not change the density of an object because the mass and the volume stays the same. So then the density stays the same. ... An air bubble rises to the surface of a glass of water w=1 g/mL because the air bubble has less density than the water.

Does size (or amount) affect density? ... However, the density does not change. This is because the mass and volume increase at the same rate/proportion! Even though there is more molasses (mass) in test tube A, the molasses also takes up more space (volume).

How does gravity affect density? The gravity of the body will work to increase its density. ... If we have more mass then we have more gravity, so atoms would be brought closer together until the electromagnetic repulsion equalizes with the gravity.

Density-dependant factors may influence the size of the population by changes in reproduction or survival. ... This in turn led to a decrease in per capita birth rate, a limitation in population growth as a function of population density. Density dependant factors may also affect population mortality and migration.

Vitamin D status is related to bone mineral density and bone turnover. Vitamin D supplementation may decrease bone turnover and increase bone mineral density. Several randomized placebo-controlled trials with vitamin D and calcium showed a significant decrease in fracture incidence.

For any constant mass, perceived heaviness increases with the object's physical density [34,35,40]. Thus an object's density rather than size might be the second component, next to its mass, which is considered in the judgment of heaviness and which biases our perception in terms of the size-weight illusion.

If the weight of an object is less than the weight of the displaced fluid when fully submerged, then the object has an average density that is less than the fluid and when fully submerged will experience a buoyancy force greater than its own weight.

A few examples of how density applies to everyday life are in ship building, helium balloons, pipe design and the fact that ice floats on water. Density is defined as an object's mass per unit volume. ... They are able to float in the air because helium gas density is lighter than the density of air.

In simple terms, density describes how compact or concentrated an object is. ... Density also determines whether an object will float or sink in another substance. Polarity refers to molecules that are positively charged at one end and negatively charged at the other. It also determines how atoms bond with each other.

Again, hydrogen bonding is the reason. Hydrogen bonds cause water molecules to line up less efficiently in ice than in liquid water. As a result, water molecules are spaced farther apart in ice, giving ice a lower density than liquid water. A substance with lower density floats on a substance with higher density.

Atoms with smaller atomic radius's will have greater electron density, increasing basicity. Atoms with larger atomic radius's will have less electron density, reducing basicity. Key point: LARGER atomic radius means LOWER basicity. SMALLER atomic radius means HIGHER basicity.

Density dependent factors cause variable changes in the population as its density changes. When the population is small, these factors typically favor increased birth rates and lower death rates, allowing the population to expand.

How Salt Water Influences Buoyancy. Adding salt increases the density of water. ... If the same volume of water is displaced by an object, the weight of saltwater displaced is greater and thus the force of buoyancy is proportionally greater.

Temperature Affects Density When the same amount of water is heated or cooled, its density changes. ... When comparing two samples of water with the same salinity, or mass, the water sample with the higher temperature will have a greater volume, and it will therefore be less dense.

Density: Why It Matters Pressure, temperature and humidity all affect air density. And you can think of air density as the mass of air molecules in a given volume.

The density of water can also be affected by temperature.

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The warmer the water, the more space it takes up, and the lower its density.

When comparing two samples of water with the same salinity, or mass, the water sample with the higher temperature will have a greater volume, and it will therefore be less dense..

Weight depends on density (think of a helium balloon). Water has different density depending on temperature (that's why ice floats). As I remember, water at 4 degrees C is the densest. Therefore, yes, it's weight is different at different temperatures.

Breast cancer and its treatment can have a number of physical effects on your body. You might be challenged by fatigue, pain, lymphoedema, lowered bone density, changes in weight, changes in mood, hair loss or the side effects of early menopause.

Certain cancer treatments can increase the risk for osteoporosis in both men and women. Some chemotherapy agents can decrease your bone density. It's a rare occurrence. Hormone therapies for breast and prostate cancer can affect bone density, as well.

Factors that affect density altitude are temperature, elevation, humidity, dewpoint and pressure. what will result in high density altitude: high humidity, high temperature, low pressure and high elevation from sea level all contribute to high density altitude. As elevation increases, density altitude also increases.

Living in neighbourhoods with high population density may damage health. ... Although the health-enhancing impact of more active transport among those living in more densely populated neighbourhoods compensated part of this effect, overall, higher density remained associated with a higher risk of mortality.

Focus on basic management factors improves flock productionHigh stocking density and disease. ... High stocking density and carcass quality. ... High stocking density and parasites. ... Alleviate the effects of high stocking density. ... Heating. ... Figure 1 – A simplified solar heating system. ... Lighting. ... Feeds and feeding.More items...•Mar 20, 2017

After noting the density of each liquid it became clear that the higher the density the greater the surface tension. The experiment showed that water, the liquid with the highest density, has the highest surface tension; while alcohol,the liquid with the lowest density, has the lowest surface tension.

Higher rural population density is associated with smaller farm sizes.

Higher rural population density is also associated with greater demand for inorganic fertilizer.

Maize and teff yields do not rise with population density.

Farm income per hectare decreases as rural population density rises..

The higher the temperature, the faster the molecules are moving. As the air is heated, the molecules speed up, which means they push harder against their surroundings. ... In the free atmosphere, the air's density decreases as the air is heated. Pressure has the opposite effect on air density.

If the density of an object in the fluid is greater than the density of the fluid, the object will sink. If the density is less than the fluid, the object will float. An object will float to the top and only be submerged by an amount according to the ratio of the densities.

In other words, the size or amount of a material/substance does not affect its density.

3.

Does temperature affect density?.

The density of an object or quantity of matter is its mass divided by its volume. This is usually measured under standard conditions for temperature and pressure: 0°C and 1 atmosphere of pressure. One factor affecting the density of a material is how concentrated the atoms are in a given volume.

How does the spread of low-density development affect agricultural land and forests? Allowes for more buildings and roads while less forests are left.

How does gravity affect density? The gravity of the body will work to increase its density. If we think of gravity as a force then to achieve equilibrium something needs to counteract the force of gravity, usually electromagnetic repulsion caused by neighboring electron shells.

Although rapid/large weight loss is often associated with loss of bone density, slower/smaller weight loss is much less apt to adversely affect BMD, especially when it is accompanied with high intensity resistance and/or impact loading training.

VMCG is affected by density altitude. High density altitude - Less Thrust - Easier aircraft control. Thus VMCG reduces at higher density altitudes.

Early research in people metabolic syndrome shows that taking curcumin, a chemical in turmeric, for 2-3 months decreases low-density lipoprotein cholesterol (LDL) or a type of "bad" cholesterol. However, curcumin does not affect weight, blood pressure, blood sugar or levels of other lipids in these people.

Lift and drag depend linearly on the density of the fluid. Halving the density halves the lift, halving the density halves the drag. The fluid density depends on the type of fluid and the depth of the fluid. In the atmosphere, air density decreases as altitude increases.