Variables
Which kind of variable always stays the same?
controlled variable
What are the things we need for an experiment called?
Materials or supplies
What are our 5 senses
Sight, hearing, taste, smell, touch
What measurement in science is often compared to weight and measured in pounds?
Mass
What do we use to measure weight and mass?
a scale
Which kind of variable is changed by the scientist?
Independent Variable
What are the steps we take in an experiment called?
Procedures
Identify the Independent Variable:
The time it takes to run a mile depends on the person’s running speed.
how fast the person runs
What measurement tells us how big something is in science?
Volume
What should we use to cover our eyes during any experiment that could splash or damage our eyes?
safety googles
Which kind of variable is changed by the other variable?
Dependent Variable
What are the things we see, feel, hear, smell, and taste in an experiment called?
observations
Identify the Dependent Variable:
The time it takes to run a mile depends on the person’s running speed.
Time it takes
What measurement tells us how closely together the molecules or atoms are in an object
Density
What is a tool we can use to measure volume if all the sides are straight?
ruler or yard stick
Which variable usually gives the answer?
Dependent Variable
What are your results called?
Conclusions
What are the 2 kinds of observations
Qualitative and Quantitative
When the atoms or molecules of an item are more closely together is it more dense or less dense?
More dense
What can we use to measure volume if it is shaped weird?
Graduated cylinder with water
Name all 3 types of Variables we have learned about
Dependent, controlled, independent
What is your guess about what will happen in an experiment called?
Hypothesis
What kind of observations use a number?
Quantitative
When you have 2 liquids with different densities together, which one will float to the top, more dense or less dense?
less dense
What do I need to use to see molecules and atoms?
microscopes