Dr. Galit wants to know what you know!

Volume is:

• The amount of particles that make up an object

• The amount of space an object takes up

• How much an object weighs

• The amount of particles in a certain amount of space

The mass of an object is:

• How much something weighs

• The amount of particles that exist in a certain amount of space

• The number of particles that make up an object

• The amount of space an object takes up

Energy is:

• The ability to do work

• How much space something takes up

• How fast something can move

• The amount of particles that something is made of

Qualitative observations are made:

• Using numbers

• Using devices that measure things

• Using your 5 senses

• After an experiment is completed

A hypothesis is:

• An educated guess that we try to prove or disprove by experimentation

• An educated guess that we accept as a scientific law

• An educated guess that is almost always wrong

• Created using a great deal of bias

Balanced forces occur when:

• The net force between two objects is unbalanced

• The net force between two objects ultimately moves an object in some direction

• The net force between two objects is zero and there is no change in their motion

• The net force between two objects is not zero

Friction:

• Is something that never produces heat

• Is not something you need to consider between a wheel and the surface that the wheel is moving over

• Does not ever affect the inertia of an object

• Is a force on objects or substances in contact with each other that resists motion with each other

Mechanical energy is:

• energy due to an object's position

• the energy of an objects motion

• energy possessed by an object due to its motion or due to its position

• The energy of an objects internal composition

Force=

• Mass times velocity

• Mass times acceleration

• Mass times density

• Acceleration times velocity

A good example of chemical energy:

• Is found in the visible spectrum of light

• Would be found in sound coming out of a speaker

• Would be found in food

• Would be found in the movement of air coming out of a fan