Scientific Method
Which type of variable is the one the scientist will change?
independent variable
the size, shape, or color describes an objects
physical property
the amount of matter in an object is called
mass
describe a galaxy
gas, stars and dust
Why do we see the same side of the Moon?
rotation
the information gathered during an experiment
data
Give an example of a physical change and a chemical change
physical: melt, freeze, cut, break
Chemical: fireworks, baking, rusting
the amount of space something takes up
name 3 characteristics of inner planets
shorter time to go around sun
rocky, closer to sun, small in size,
why does the moon seem to change its appearance?
revolution around earth
Which variable is measured?
dependent variable
what is the difference between a mixture and solution
mixtures keep its identity
solution must be dissolved
what is the definition of matter
anything that has mass and takes up space
name 3 characteristics of outer planets
take longer to orbit the sun
colder, father from sun, gassy, large in size
what is the difference between waxing and waning?
waxing means bright side increasing
waning means bright side decreasing
How is a hypothesis written
If and then statement
What 3 ways can you speed up dissolving?
stir, increase temperature, small particles
What type of matter has a definite shape and volume?
solid
describe the difference between rotation and revolution
rotation: spin on axis, 24 hours/1 day, causes day/night
Revolution: go around sun, 365 days/1 year, causes seasons
why does a person on Earth see a Full Moon
what the Earth is between the Sun and Moon
A scientist completes the first trial of his experiment and writes down his data. What should he do next?
repeat experiment to see if results are the same
how can you separate salt water and rocks?
mess screen to separate rocks from salt water then evaporate the water from the salt
describe a liquid matter
has no definite shape but has a definite volume
star patterns seem to change every month throughout a year, why do they change
earth's revolution around the sun
Name the phases in order starting with new moon
new moon, wax crescent, first quarter, wax gibbous, full, wain gibbous, last quarter, wain crescent, new moon