Terms 1
Hypothesis
Gathering information using senses or with the aid of instruments
Observation
Two types of observations
qualitative and quantitative observations
What does the prefix k or kilo- mean?
thousand, 1,000
What is volume in liters for 0.13 kL?
(hint: 1kL = 1,000L)
130 L
.13 kL X 1,000 = 130 L
Observations made using one of the 5 senses: sight, smell, touch, taste or hearing
Qualitative observation
Observations made with instruments such as rulers, balances, graduated cylinders, beakers, thermometers, etc.
Quantitative Observations
____ is the amount of matter something has.
Mass
What does the prefix n or nano- mean?
billionth, 0.000 000 001
If a room is 14.5 ft long, how long is it in meters?
(hint: 1 ft = .30 m)
4.35 m
14.5 ft x .30 = 4.35m
An in-depth explanation of a range of phenomena in the natural world that has been thoroughly tested and supported by a significant amount of evidence.
Scientific theory
Useful simplification used to make it easier to understand things that might be too difficult to directly observe
Scientific model
How are science and technology related?
Technology is applied science. People use the knowledge of science to develop technologies that either advance the understanding of science or help people in some way.
kilogram (kg), gram (g) and milligram (mg) are used for measuring what?
Mass
How many centimeters in 1.5 meters?
150 cm
1.5m divided by 0.01 = 150cm
An investigation in which the factors that influence the outcome are kept the same except for one, the factor being studied.
Controlled Experiment
Logical conclusion drawn from observations, previous knowledge, and available information
Inference
The ONE variable that the experimenter changes or manipulates (all other variables remain constant).
Independent Variable
meter (m), kilometer (km), centimeter (cm) and millimeter (mm) are used for measuring what?
length
Relationship occurs when you increase the independent variable and the dependent variable also INCREASES in response.
Direct Relationship
A description of a natural phenomenon or relationship that is supported by a significant amount of evidence and often include mathematical terms.
Scientific Law
Variables
The variable that responds to changes of the other independent variable.
Dependent Variable
cubicmeter (m3), cubic centimeter (cm3), liter (L) and milliliter (mL) are used for measuring what?
volume
Relationship occurs when you increase the independent variable and the dependent variable also DECREASES.
Inverse or Indirect Relationship