IndietroBIO LAB Week 1
Termini in questo insieme (31)
Metric System
A system of measurement based on units of 10. It is the main measurement system used in science.
SI Units
Standard units scientists use to make measurements consistent around the world.
Meter (m)
The basic metric unit used to measure length or distance.
Centimeter (cm)
A small unit of length. 100 cm = 1 m
Millimeter (mm)
A very small unit of length. 1,000 mm = 1 m.
Liter (L)
A metric unit used to measure volume, especially liquids.
Milliliter (mL)
A smaller unit of volume. 1,000 mL = 1 L.
Gram (g)
A metric unit used to measure mass.
Kilogram (kg)
A larger unit of mass. 1 kg = 1,000 g.
Milligram (mg)
A small unit of mass. 1,000 mg = 1 g.
Mass
The amount of matter in an object. Usually measured with a balance.
Volume
The amount of space something takes up.
Length
The measurement of how long something is.
Temperature
A measurement of how hot or cold something is. In biology labs, it is commonly measured in degrees Celsius (°C).
Graduated Cylinder
Lab equipment used to accurately measure the volume of a liquid.
Meniscus
The curved surface of liquid in a graduated cylinder. Read the measurement at the bottom of the curve.
Balance
A laboratory instrument used to measure mass.
Density
How much mass is packed into a certain amount of space. Think: how tightly packed is it?
Mass–Density–Volume Relationship
Density depends on an object's mass and volume. For the same volume, more mass means greater density.
Scientific Notation
A shorter way to write extremely large or extremely small numbers using powers of 10.
Positive Exponent
In scientific notation, usually tells you the number is large. Example: 3 × 10⁴ = 30,000.
Negative Exponent
In scientific notation, usually tells you the number is small. Example: 3 × 10⁻⁴ = 0.0003.
Scientific Method
An organized process scientists use to ask questions, test ideas, collect evidence, and draw conclusions.
Observation
Information gathered by using your senses or making measurements.
Hypothesis
A testable explanation or prediction based on observations or previous knowledge.
Experiment
A controlled test used to investigate a hypothesis.
Independent Variable
The factor the scientist intentionally changes.
Dependent Variable
The factor the scientist measures or observes in response.
Control Group
The group that does not receive the experimental treatment and is used for comparison.
Data
Information or measurements collected during an experiment.
Conclusion
An explanation of what the results mean and whether they support the hypothesis.