Matter and Volume• Matter: anything that has mass and takes up space• Volume: amount of space an objects occupies (characteristic of matter)• No two objects can occupy the same space at the same time
• Meniscus: curved surface of any liquid in any container• Lowest point of the meniscus is the accurate measurement of volume
Matter and Mass• Mass: the amount of matter in an object (characteristic of matter)• Mass of objects are the same no matter where the object is in the universe• The only way to change mass is to change the amount of matter the object is made of• Mass and weight are NOT THE SAME
• Weight: a measure of the gravitational force exerted on an object• Gravitational force is depends on the objects mass and it’s relationship with a source of gravity• The more mass, the more gravitational force, the more weight the object has• Objects weight is determined by the force of gravity
Difference between mass and Weight• Mass • Weight• Measure of the amount of • Measure of gravitational matter in an object force on object• Always constant • Varies depending on regardless of location in objects location to earth universe (or other large body in• Measured by balance space)• Units expressed kg, g, • measured using spring mg scale • Units expressed in N (Newtons)
• Objects can have the same volume but very different masses thus the gravitational force would be greater causing greater weight• Inertia: tendency of an object to resist a change in motion (Newton’s 1st Law of Motion)
• Objects at rest will remain at rest and objects in motion will remain in motion at a constant speed and direction unless act on by an outside force• Mass is a measure of inertia• The more mass an object has the harder to get it moving and the harder it is to stop• Think train and car!!!