ATI TEAS 7 Science Scientific Reasoning Comprehensive Review

Vocabulary flashcards covering the metric system, measurement tools, scientific variables, and the scientific method for the ATI TEAS Version 7 exam.

Metric System

A standardized method of measurement based on the decimal system used in scientific research involving units like meters, grams, and liters.

King Henry doesn't usually drink cold milk

A mnemonic used to remember the order of metric prefixes: Kilo, Hecto, Deca, Base unit (usually), Deci, Centi, and Milli.

Kilo

A metric prefix meaning the base unit is multiplied by $1000$.

Hecto

A metric prefix meaning the base unit is multiplied by $100$.

Deca

A metric prefix meaning the base unit is multiplied by $10$.

Deci

A metric prefix meaning the base unit is divided by $10$.

Centi

A metric prefix meaning the base unit is divided by $100$.

Milli

A metric prefix meaning the base unit is divided by $1000$.

Ruler

A tool used for measuring short straight distances up to $30\text{ cm}$ or $12\text{ inches}$, such as the length of a pencil.

Tape Measure

A flexible, portable tool ideal for measuring longer distances often up to $25\text{ ft}$ or more, such as the length of a room.

Calipers

A precision instrument used to measure the dimensions of smaller objects like the diameter of a ball bearing or thickness of sheet metal.

Balance Scale

A traditional tool used to compare the mass of two objects, often used in educational environments.

Digital Scale

A tool used to obtain precise measurements of the mass of objects like reciprocal ingredients or laboratory chemicals.

Spring Scale

A tool that measures mass by determining the weight of an object using the force of gravity.

Graduated Cylinder

A laboratory tool used to measure liquid volume with high accuracy, ranging from a few milliliters to several liters.

Pipet

A precision tool used in chemistry and biology to transfer small amounts of liquids, typically in milliliters or smaller units.

Millimeters

The appropriate metric unit for very small length measurements, such as the thickness of a credit card.

Kilometers

The appropriate metric unit for measuring geographical distances between two cities.

Kilograms

The metric unit commonly used in healthcare to measure larger weights like human body weight.

Empirical Evidence

Observable and measurable information obtained through observation or experimentation that provides the foundation for objective conclusions.

Qualitative Data

Descriptive data involving the observation of patterns, colors, textures, and behaviors.

Quantitative Data

Numerical data used to quantify variables such as length, height, frequency, or quantities (e.g., $15\text{ kg}$ or $10\text{ L}$).

Independent Variable

The variable that researchers manipulate (the cause) to observe its effects on other variables.

Dependent Variable

The variable that is measured (the effect or output) to see how it responds to changes in the independent variable.

Controlled Variables

Conditions consistently maintained (like soil type or water schedule) to ensure differences in the dependent variable are due only to the independent variable.

Reproducible Results

Findings that remain consistently similar when an experiment is repeated under the same conditions.

Cause-and-Effect Chain

A scenario where an effect from one event becomes the cause of another, creating a sequence of events.

Scientific Method

A cyclic series of steps (observation, research, hypothesis, experiment, conclusion, sharing) designed to generate dependable answers.

Hypothesis

A specific prediction about an outcome, typically structured as an If-Then statement.

Experimental Group

The group in a study where the independent variable is modified to observe the impact.

Control Group

The group that serves as a benchmark for comparison against unchanged conditions, often receiving a placebo.

Placebo

A substance given to the control group to ensure observed effects are attributed to the treatment rather than other factors.