Chap 2 sec 1
- 1. 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
- 2. • Meniscus: curved surface of any liquid in any container • Lowest point of the meniscus is the accurate measurement of volume
- 3. 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
- 4. • 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
- 5. 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)
- 6. • 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)
- 7. • 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!!!