Take the Physics Pre-test:
Click here for the Physics 1 Mass, Weight & Gravity Pre-Test
Test Review
Forces & Motion:
Day 1: Matter's relationship to mass
Day 2 & 3: Force = Mass x Acceleration
On this day we learned that:
Day 3: Balanced v. Unbalanced Forces
Mass, Weight, Gravity Packet:
Part 1: Gravitational Direction
Part 2: Two variables of Gravitational Attraction
Part 3: Acceleration due to Gravity
Part 4: Falling Objects in Gravity Fields
Part 5: Instruments
Part 6: Weight & Force
Part 7: Inertia
Part 8: Acceleration Rate of the Earth
Bridge Building:
Day 1: Matter's relationship to mass
- On this day we learned that matter is made up of atoms - and that if we have more matter - we also have more mass.
Day 2 & 3: Force = Mass x Acceleration
On this day we learned that:
- "FORCE" is your push or pull
- "MASS" is the object - that is made of matter
- "ACCELERATION" is the object going faster or slower (changing velocity)
- Mass has inertia - inertia is the resistance to the force that is causing the change of motion and / or speed.
- In other words, the more mass you have, the harder it is to push it to get it to move.
Day 3: Balanced v. Unbalanced Forces
- Balanced forces causes objects to accelerate and go faster or slower or change direction.
- Unbalanced forces causes no acceleration. Objects are either standing still or going at a constant velocity.
Mass, Weight, Gravity Packet:
Part 1: Gravitational Direction
- Gravity points towards the center of the object
Part 2: Two variables of Gravitational Attraction
- Mass of two objects & Distance affect your gravitational attraction to earth (aka: weight).
- The more mass you have, the more you weigh.
- The more mass the planet has, the more you weight too.
- The farther you are from Earth, the less attracted Earth is to you.
Part 3: Acceleration due to Gravity
- Gravity causes things to accelerate.
Part 4: Falling Objects in Gravity Fields
- All objects, despite their mass, fall at the same rate.
- Air creates friction - which may slow down the decent.
Part 5: Instruments
- The triple beam balance measures mass [grams] because gravity is balanced out on both sides of the fulcrum.
- The force meter and bathroom scale measures weight [Newtons] because you are countering the force of gravity with either the forces of tension or compression.
Part 6: Weight & Force
- Weight is a force, and is measured in Newtons.
Part 7: Inertia
- The more mass you have, the more inertia you have
- The more mass you have, the harder it is to move an object.
- Therefore, between you and a massive object pushing on friction-less surfaces, the object that has more mass stay's put or hardly moves, the other moves the most.
Part 8: Acceleration Rate of the Earth
- Since all objects fall at the same rate, the acceleration rate of the earth is 9.8 m/(s^2)
Bridge Building:
- Engineers build bridges and other structures to support objects that have massive amounts of weight - because weight is a force that needs to be supported over long spans of distance.