motion
energy
friction
atoms
wild card
100
you are standing on one foot and not falling over. what kind of force is it?
What is a balanced force
100
what is energy? How do you get it?
energy is the ability to do work. Energy is in everything. We use energy for everything we do, from making a jump shot to baking cookies to sending astronauts into space. There are two types of energy: * Stored (potential) energy * Working (kinetic) energy
100
what are two causes of increased friction
a rougher surface area, more force being exerted
100
what is an atom?
an atom is the smallest divisible type of matter that still has the properties of a substance
100
Give four examples of a force being exerted. Say if it is a push or pull or both!
tug of war, etc.
200
you build a house of cards and it keeps falling down. what kind of force does this?
What is unbalanced force
200
An object does not have to be moving to have energy. What is the name for this kind of energy? AND give an example of it.
potential energy is the energy an object has because of its position, shape or condition gives it potential to move. an example is a ball on top of a hill...an arrow pulled back, a spring that has been pushed down, an elastic band pulled back.
200
How can friction be harmful or be a disadvantage.
takes more energy for machines, wears down socks, wears down tires, causes machine parts to break down
200
tell us the charges of an electron, neutron and proton
electron is negative, neutron is neutral, proton is positive
200
Explain the difference between a balanced force and unbalanced force and how each effects the motion of an object
balanced forces result in no movement. Unbalanced forces cause movement
300
What does this mean: For every action, there is an equal and opposite reaction.
every force produces an equal and opposing force- a push and a pull. this creates motion and direction
300
What is kinetic energy? Give one example.
kinetic energy is moving energy. A hammer has kinetic energy.
300
How can friction be helpful?
friction is helpful when there is more traction on the road (vs icy)
300
draw a picture of an atom
the drawing includes proton, neutron, electrons, nucleus, electron cloud
300
look out the window- describe the energy you see there. look around the room, what kind of energies do you see here?
Energy causes things to happen around us. Look out the window. The sun radiates light and heat energy. It helps plants to grow. At night, lamps in our home use electrical energy to light our rooms. When a car drives by, it is being powered by gasoline, a type of stored energy. The food we eat contains energy. We use that energy to work and play.
400
What does this mean: “A greater force creates more friction”? Give an example from your life experiences.
describe a situation where more weight or mass creates wearing down due to friciton
400
what kind(s) of energy does a juggler use to throw and catch juggler pins. Explain~!
a juggler uses mechanical energy- this is a combination of potential and kinetic.
400
What kind of 'friction' is a parachute using to slow down the force of gravity.
A parachute uses the force of air resistance- the parachutes surface area creates an opposing force for gravity
400
what part of the atom is the most likely to become 'unstable' and be lost to another atom? (think of the way an atom is designed)
the electron cloud is the least stable part- it is very active and on the outside of an atom.
400
If an element has an atomic number of 113, how many protons and neutrons does it have?
the atomic number is the number of protons, the number of protons equal the number of neutrons
500
name all the factors that effect motion. (ok, at least 3 factors)
friction affects how fast something moves, unbalanced forces affect the direction, slope can effect acceleration, energy input can effect momentum....
500
trace the all the sources of energy for your pizza.
sun, green plants, cow, electricity, heat, and human work energy
500
compare sliding friction and rolling friction. give examples and tell which is stronger
sliding: moving furniture across a floor, vs putting wheels under it. the force of sliding friction is stronger
500
explain why an atom has a neutral charge
the proton in the nucleus has a positive charge, the electron has a negative charge, they cancel each other out
500
what is static electricity? how can it exert a force?
Static electricity is the imbalance of positive and negative charges- electrons can move. opposite charges attract and cause objects to "cling" it takes force to pull them apart.
M
e
n
u