A middle school teacher is setting up a lab where students will heat liquids over an open flame. Which safety practice is most essential before the activity begins?
Scientific Inquiry And Processes
Question · Easy
The houseplant does both
Short
Which instrument is most appropriate for measuring the volume of an irregularly shaped solid object?
Introduction & Exam Overview
About the TExES Science 4-8 (116) Exam
Study guide
A student measures the mass of an object three times and gets 24.8 g, 24.9 g, and 24.7 g, but the true mass is 30.0 g. These measurements are best described as:
Question · Hard
In a controlled experiment testing how fertilizer affects plant growth, which of the following is the independent variable?
A scientific theory differs from a scientific hypothesis primarily in that a theory:
Question · Medium
Why is peer review an important part of the scientific process?
How to Use This Guide and Study Strategy
At standard atmospheric pressure, a student records the boiling point of water as 100 degrees on a thermometer. Which temperature scale is being used?
How many milliliters are in 2.5 liters?
A teacher wants students to communicate how a population of bacteria changes over time. Which data display is most appropriate?
When using science to inform a community decision about building a new power plant, which factors should be considered together with the scientific data?
Chapter 1: Domain I — Laboratory Safety and Scientific Tools
1.1 Laboratory Safety Management
Which of the following is a renewable natural resource?
The concept that the structure of an organ is closely related to the job it performs is best described by which unifying theme of science?
A scientific model, such as a model of the atom, is most useful because it:
A student wants to find the density of a metal block with a mass of 60 grams and a volume of 20 cubic centimeters. What is the density?
1.2 Safe and Ethical Care of Living Organisms and Specimens
Which of the following best describes a key reason scientists use repeated trials in an investigation?
A 10 kg object is pushed with a net force of 20 newtons. According to Newton's second law, what is its acceleration?
Physical Science
Which statement correctly distinguishes speed from velocity?
An astronaut's weight on the Moon is less than on Earth, but their mass stays the same. This is because:
1.3 Tools, Materials, Equipment, and Measurement
Which of the following is an example of a physical change rather than a chemical change?
On the periodic table, elements in the same vertical column (group) generally share which characteristic?
What are the three subatomic particles that make up an atom?
In the chemical reaction 2H2 + O2 yields 2H2O, why must the equation be balanced?
Chapter 2: Domain I — Measurement Systems and Scientific Data
2.1 The International System of Units and Unit Conversion
Which of the following correctly describes a compound?
A book resting on a high shelf has energy due to its position above the ground. This is an example of:
Heat energy always flows spontaneously from:
Which arrangement would allow electric current to flow continuously through a light bulb?
2.2 Organizing, Displaying, and Communicating Scientific Data
When white light passes through a prism and separates into a spectrum of colors, this demonstrates the property of:
Sound waves require which of the following to travel from a source to a listener?
Two waves have the same speed, but Wave A has a higher frequency than Wave B. Compared to Wave B, Wave A has:
A chemical reaction that releases heat to its surroundings is best described as:
Chapter 3: Domain I — Inquiry, the Nature of Science, and Society
3.1 The Scientific Inquiry Process
Which cell structure is responsible for producing most of a cell's usable energy through cellular respiration?
Life Science
A dichotomous key is a tool that scientists use to:
Which human body system is primarily responsible for transporting oxygen and nutrients to cells throughout the body?
During photosynthesis, plants convert carbon dioxide and water, using light energy, into:
3.2 The History and Nature of Science
Which of the following is an example of asexual reproduction?
In a cross between two pea plants, T (tall) is dominant over t (short). If both parents are heterozygous (Tt), what fraction of offspring are expected to be short?
Which molecule carries the genetic instructions that are passed from parents to offspring?
Over many generations, a population of moths in a soot-darkened forest becomes predominantly dark-colored because dark moths are better camouflaged from predators. This change is best explained by:
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