Scientific Process
Correct order to test a question or problem
Question, Hypothesis, Experiment, Interpret/Analyze Data, Conclusion
the three states of matter
solid, liquid, gas
a rocket engine thrust is an example of which law of motion
the third law
a form of energy due to its motion
kinetic energy
two poles of a magnet
north, south
mass number - atomic number =
# of neutrons
what is a solution?
a mixture in which a solute is dissolved in the solvent.
whats the difference between velocity and acceleration?
velocity uses acceleration and indicates direction
if a ball on a pendulum is at rest on a pendulum is its potential energy or kinetic energy higher
potential energy
how would you make two magnets repel each other
face two of the same poles towards each other
What is the independent variable?
Students of different ages were given the same puzzle to assemble. The puzzle assembly time was measured.
The different ages of the students
what is a chemical change?
when a substance combines with another to form a new substance (often with different properties)
how to calculate speed and acceleration
s=d/t
a= vf-vi/t
M E L T S stands for
mechanical, electrical, light, thermal, and sound energy
the type of circuit that would get dimmer if a bulb was added.
series
the cup had a mass of 454 grams, the temperature outside was 25oC, the tree is 35 feet tall, and the building had 25 stories, are all examples of what type of observation?
quantitative
______ -gas to liquid: energy is ______
condensation- gas to liquid: energy is removed
why would a bowling ball and a feather fall at the same time in a vacuum?
there is no air resistance
a form of potential energy related to the structural arrangement of atoms or molecules
chemical energy
static electricity is
an electric charge caused by an imbalance in positive and negative charges
Suppose your friends went to the beach at noon on a warm day. They saw some black and white birds. what are the inferences from this statement: it is summertime, it is daytime, they saw birds, they saw seagulls, they went swimming.
it is summertime, they saw seagulls, they went swimming
list the ways to accelerate the rate of dissolving?
stirring, temperature, particle size
what would be the net force and direction of motion if i was pulling a rope with 500 newtons right and my friend was pulling the same rope with 450 newtons left.
50 newtons to the right
matter -> ____->____-> H2SO4, H2O, C6H12, N2O5
matter -> pure substances->compounds-> H2SO4, H2O, C6H12, N2O5
how are electromagnets different from permanent magnets?
they are temporarily magnetized, the magnetism can be varied in strength, the magnets poles can be modified