CSET SCIENCE - Prac test Ch. 2 - Performing Scientific Investigations

What is a good hypothesis based on? A good scientific question A good set of observations A good scientific experiment Good writing skills A good set of measurable variables

A good scientific question

If you are measuring daily plant growth, which might be an appropriate tool to use to collect those measurements? A ruler with inches A ruler with millimeters A meter stick A quadrat A measuring tape

A ruler with millimeters

Basic safety rules are: rules that should be followed every time you run an experiment All are correct usually common sense rules that everyone should follow no matter their skill level things like not putting substances in your mouth

All are correct

Which of the following is a criterion for a good hypothesis? It is clear All are correct It identifies measurable variables It can be limited to one experiment It is testable

All are correct

Why might you re-run an experiment? Your experiment did not answer your original question You observed new and interesting things during your experiment Your experiment generated new questions Your experimental results weren't clear All are correct

All are correct

Which best describes a population? A sub-set of a larger group of individuals None are correct All of the clusters that are sampled All of the individuals being studied All of the individuals sampled from various strata

All of the individuals being studied

How is a hypothesis related to an experiment? A hypothesis is written to support an experimental design An experiment is designed to disprove a hypothesis An experiment is designed to prove a hypothesis An experiment is designed to test a hypothesis A hypothesis is written based on the results of the experiment

An experiment is designed to test a hypothesis

When is the best time to consider which type of analysis to use to examine your data? After all of the data have been collected After you have run a few analysis trials It will be obvious once you have collected your data so you won't need to make this decision Before you even begin collecting data During the experiment when you know better what your data look like

Before you even begin collecting data

What are the two key points of simple random sampling? Each individual must be removed from the population after sampling; each sample is independent of the others. Each sample is independent of the others; each individual has the same chance of being sampled. No two individuals have the same chance of being sampled; each sample is dependent on the others. Start points must be randomly selected; each sample is selected at a predetermined interval. The population is split into groups, each group is randomly selected for sampling

Each sample is independent of the others; each individual has the same chance of being sampled.

This is a type of research that provides strong evidence for cause and effect relationships: All of these answers are correct Negative research Correlational research Experimental research Quazi-research

Experimental research

Which of the following is a goal of the National Science Teachers Association? Helping school age children safely study science Making sure scientists act ethically Protecting wildlife Helping employees remain safe on the job Helping children find careers in science

Helping school age children safely study science

Which of the following happens after a scientific theory has been accepted? It becomes a scientific law. It cannot be changed. It continues to be tested and adapted, if necessary. It is eventually replaced by a new theory.

It continues to be tested and adapted, if necessary.

13.Which of the following is NOT true of a scientific theory? It is based on a guess. It has been rigorously tested. It explains why a phenomenon occurs. It is created by the scientific method.

It is based on a guess.

Which of the following is viewed as scientific fact without any exceptions? Analysis Law Theory Observation Hypothesis

Law

This type of scientist might have safety concerns about severe weather over the ocean. Entomologist Zoologist Microbiologist Botanist Marine biologist

Marine biologist

This type of research can be broken down into naturalistic and participant: Observational Cohort None of these answers are correct Experimental Research paper

Observational

Scientific questioning comes after which step in the scientific process? Experimentation Communication with the scientific community Hypothesis formation Observations Data analysis

Observations

Which of these is a process that requires scientists to critique each other's work and decide whether it meets the standards of the scientific community? Peer review Conclusion Experiment Question

Peer review

Which of the following is NOT true about science? Science journals usually require peer review. Scientists often rely on their experience. Scientists often use creativity. Scientists never compete with one another.

Scientists never compete with one another.

Which of the following is an example of a viable hypothesis? Eating chocolate will cause your face to break out Dogs are better than cats. Taking a woodworking class is beneficial for high school girls Students who attend class do better on exams than students who do not attend class All are viable hypotheses

Students who attend class do better on exams than students who do not attend class

You are conducting a political survey in a neighborhood and decide that after randomly selecting a start point, you will sample every 15th house on the street. What type of sampling will you be using for this survey? Systematic Simple random Cluster Non-random Interval

Systematic

If I release 10 spiders into a room and measure how long it takes people to get out of the room, what is the independent variable? The people The spiders The room The amount of time it takes the people to leave the room

The spiders

Which of the following is NOT one of the six key steps of the scientific method? Experiment Observation Hypothesis Theory

Theory

Which of the following summarizes an accepted hypothesis tested by many scientists? Theory Law Conclusion Analysis Observation

Theory

19.Which of the following is TRUE about control variables? They are controlled so that they don't affect the dependent variable. None of the answers are correct They are manipulated so that they affect the dependent variable. They are controlled so that they don't affect the independent variable. They are not the same for the subjects in the experiment.

They are controlled so that they don't affect the dependent variable.

Which of the following best describes control variables? They increase the participants' control over the experiment. They provide the researcher with control over the independent variable. They are kept the same over multiple trials. They increase the variability of the experiment.

They are kept the same over multiple trials.

Which of the following is true about potential safety hazards in experiments? They will be the same for every experiment you run They are only serious if you are working in a lab They will be specific for every experiment you run They can be dealt with as they come up They are usually pretty minimal as long as your staff is well-trained

They will be specific for every experiment you run

What does it mean to assess potential safety risks in your experiment? You clean your workspace You train your staff how to use a fire extinguisher You identify all of the things that can go wrong All are correct You inform your staff where the first aid kit is located

You identify all of the things that can go wrong

Some life scientists like Dian Fossey study animals. What are these scientists called? Botanists Microbiologists Entomologists Zoologists Chemists

Zoologists

An experiment should show that a hypothesis is either _____. peer reviewed or not reviewed left or right supported or not supported correct or incorrect

supported or not supported