science midterm review Flashcards
Observing
Using one or more of your senses to gather information
What are the processes of science?
The processes of science involve observing, inferring, predicting, classifying, evaluating, making models, and conducting scientific experiments.
Inferring
When you explain or interpret the things you observe
Predicting
Making a statement or claim about what will happen
Classifying
The grouping together of items that are alike in some ways
Making models
Involves creating representations of complex objects or processes
Evaluating
Involves comparing, observations, and data to reach a conclusion about them
Conducting Scientific investigation
The way in which scientist study the natural world. First, you ask a question. Then, you figure out a way to find the answer . Finally, you perform the actions necessary to find the answer.
Why is a standard measurement system important?
It allows scientist to compare data and communicate with each other.
What are some si units of measure?
Length , mass, weight, volume , density, temperature, time
Length
Distance from one point to another
What are the conversions of length ?
1km= 1,000m
1m=100cm
What is one tool used to measure length ?
Metric ruler
What is the basic si unit of length ?
Meter
Mass
A measurement of the amount of matter in an object
What is the basic si unit of mass?
Kilogram
What si used to measure mass?
A balance
What would you use to measure smaller masses?
Gram and milligrams
What are the conversions for mass?
1kg=1,000g
1g=1,000mg
Weight
A measure of the force of gravity acting on an object
What is used to measure weight?
A scale
What is the si unit of weight?
Newton
Volume
The amount of space an object or substance takes up
What si unit is used for measuring volume of solid?
Cubic meter (cm3)
What is the si unit for measuring volume of liquid and gases?
Liter (L)
What are the conversions of volume?
1m3=1,000,000cm3
1cm3=1mL
1L=1,000mL
1L=1,000cm3
What is the volume of a liquid measured with?
Graduated cylinder
Density
A measure of how much mass is contained in a given volume.
What is the si unit of density ?
Kilogram per cubic meter
What kind of data do line graphs display?
Show how one variable changes in respond to another variable
What are line graphs powerful tools?
Line graphs are powerful tools because they allow you to identify trends and make predictions about those trends
Graphs
Organized data into a picture that can be analyzed
Manipulated variable
Scientist make a changes to this variable only
Responding variable
Data scientist collect show how a secound variable responded to this changes
Continuous variable
Has point between the tested points temperature and time is an example
Line graph
Useful for recording the results of many experiments
How do you use a line graph in an experiment?
Scientist Change one variable called the manipulated variable. The data they collect show how a second variable responded to this changes the responding variable
What is a linear graph?
A line graph in which the data points from a straight line
What is a nonlinear graph?
A line graph in which the data points do not fall along a straight line
What do both no linear and linear graphs show?
Trends
What is scientific inquiry?
Scientific inquiry refers to the diverse ways in which scientist study the natural world and based propose explanations on evidence they gather
