If something seems light for its size (like a bag of cotton or pumice rock), then we say it has low density. Mass is the amount of matter in an object. Volume is how much space the object takes up.

Note: We are purposely using the terms “size” and “amount” instead of “volume” in discussions of density. We are also using “heavy”, “light”, and “weight” instead of “mass”. If your students have ...

Scientists have discovered an antibody treatment that may help prevent both muscle loss and bone density loss in people using ...

Note: We are purposely using the terms “size” and “amount” instead of “volume” in this lesson about density. We are also using “heavy”, “light”, and “weight” instead of “mass”. If your students have ...

BMI is a widely used tool for assessing obesity, but it has limitations. It doesn't account for muscle mass, fat distribution or bone density. Experts suggest using it alongside other measures for ...

Moderate, long-term weight loss results in the loss of bone mass in overweight or obese premenopausal women. However, whether these changes persist during weight maintenance or regain remains to ...

A study on physical activity and bone density in individuals with osteoporosis indicates that engaging in weight-bearing aerobic exercises by itself can help reduce the loss of bone mass ...

Exercise alone led to weight loss similar to the use of liraglutide alone but with increased lean mass and preserved bone ...