SW1(Intro)-2 (Matter)
What is social science?
Study of how and why people do things
How can you transform a solid in to a liquid?
Expose it to heat
What is a spectrum?
A range
What are the charges of the battery terminals?
Negative and Positive
Who invented the lightbulb?
Thomas Edison
What scientist is famous for the findings about gravity?
Sir Isaac Newton
Describe the particles in a solid
Close together and moving slowly
What do decibels measure?
Sound
Electricity comes from atoms. What is an atom?
Basic building block of life
Smallest unit of matter
What are the two forces that are always acting on an object unless you are in outer space?
Friction and Gravity
What is the formula for density?
Density is mass divided by volume
Compare radiation and conduction
Radiation is heat transfer by waves
Conduction is heat transfer by direct contact
Compare refraction and reflection
Refraction is when light bends as it passes through
Reflection is when light bounces off and object
Compare an insulator and conductor and give an example of each
Insulator- does not allow electrons to move through easily and keep us from getting shocked. Ex: rubber plastic
Conductor- allows electrons to move through easily. Ex: Copper, silver
Name all 6 simple machines
wedge, screw, inclined plane, wheel and axle, pully and lever
Compare mass and volume
Mass is how much stuff is in an object
Volume is how much space the matter takes up
Label the parts of an atom and explain where each part is located
Neutron- in nucleus; neutral charge
Protons- in nucleus; positive charge
Electrons- spin around nucleus; negative charge
What is a particle of light called?
Photon
What is the unit of measurement for the strength of an electric current?
Amp or ampere
Compare potential and kinetic energy and give an example of each
Potential- stored energy
Kinetic- moving energy (force)
What are the four branches of science that we studied
Life
Geo/Astro
Physical
Social
Explain the process of convection
Particles are heated and rise
When they rise away from the heat source they begin to cool
As the cool they sink
Once they sink close enough to the heat source, they heat up and rise
Process continues and causes a circle
Explain how we see color
The colors from the light spectrum are bouncing off. So if we see blue, then blue is bouncing off and the others are absorbed
What is the name of the pathway for the flow of electricity and how can you stop that flow?
The pathway is a current and you can stop the flow by breaking the current
List and explain each of Newton's Laws
1- an object says at rest until another force acts upon it
2- Mass and velocity decide where an object will move
3- for every action there is an equal and opposite reaction