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experiment

procedure that tests a hypothesis by collecting information under controlled conditions

What is a control variable?

is the one element that is not changed throughout an experiment, because its unchanging state allows the relationship between the other variables being tested to be better understood.

What is an observation?

the action or process of observing something or someone carefully or in order to gain information in an experiment.

What is a hypothesis?

An explanation for a question or a problem that can be formally tested.

What is an experiment?

An investigation that tests a hypothesis by the process of collecting info under controlled conditions.

Would you make an observation or an inference on something you don't know?

An observation

Explain the difference between an observation and a hypothesis.

An observation is a process of observing an object or experiment without creating a question while hypothesis is a question or statement the experiment is based off of.

Select which of the following is a reasonable experiment. - What climate helps plants grow the quickest? - What is john's favorite color? -When will the earth end?

Answer: What climate helps plants grow the quickest?

What does your observation support?

Conclusion

Plasmolysis

Contraction of the protoplast of a plant cell as a result of loss of water from the cell

Animal cell

Eukaryotic cell in which all the organelles are contained in membranes

Plant cell

Eukaryotic cells that differ in several key aspects from the cells of other eukaryotic organisms

An experiment does not test a hypothesis by the process of collecting info under controlled conditions? True or False?

False

The control receives a lot of experimental treatment. True or False?

False

How would you discover which variable is the control?

Find out what you are keeping the same in the experiment. The thing that stays the same.

Describe the steps in making a hypothesis.

First you need to gather the information you already know and using that information say the outcome you predict is going to occur.

Scientific methods usually begin with scientist __________ a ___________ to solve by observing the world around them.

Identifying and Problem

Do scientific methods suggest a rigid approach to investigating and solving problems?

No, because their are no fixed steps to follow.

Which cell complains chloroplasts?

Plant cell

Which cell produces its own energy

Plant cell

Why is the control variable significant?

So you can see the change in an experiment

What are the steps of the scientific method?

State the Problem, Research, Make a Hypothesis, Experiment, Data Collection, Conclusion, Retest

Which of the following is not a control variable in this experiment? What temperature do plants grow the best in? - Soil - Type of plant - Temperature

Temperature is not the control variable.

What is an observation?

The action or process of observing something scientifically in order to gain information.

Which one of the following is not a step of the scientific method? -Retest -Observation -Theory

The answer is Theory.

What is Scientific Method?

The common steps that biologists and other scientist use to gather information and answer questions.

What is control

The part of an experiment that is the standard against which results are compared.

Turgor pressure

The pressure of water pushing the plasma membrane against the cell wall of a plant

What is the purpose for forming an experiment.

The purpose for forming an experiment is to prove or disprove your hypothesis.

Which of the following is an example of an observation? - I think that the salt will absorb more water from the plant. - The rock feels hard and rough. - If you pour water in a cup and put salt in it then the salt will dilute.

The rock feels hard and rough.

Explain how the scientific method has influenced the way scientists do experiments.

The scientific method has made experiments more organized and has improved the efficiency of them.

Hypothesizing is one of the methods most used by scientist. True or False?

True

People repeat experiments to get the right answer repeatedly to make sure their data is correct. True or False?

True

Despite ____ ____, the cell doesn't bust because of the cell wall

Turgot pressure

What is the difference between control group and experimental group?

A control is the part of an experiment that is the standard against which results are compared, then the experimental group is the test group that receives experimental treatment.

What is the difference between a hypothesis and a theory?

A hypothesis is an educated guess and a theory is a statement based on lots of evidence that could be disproved but is highly unlikely to.

Is a hypothesis an opinion or a fact?

A hypothesis is an opinion on a certain thing.

what criteria would you use to assess the conclusion?

A observation

Crenation

A process resulting from osmosis in which red blood cells, in a hypertonic solution, undergo shrinkage and acquire a notched or scalloped surface

What is a experiment?

A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

What is a hypothesis?

A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Is there such thing as a personal observation? Explain.

Yes, because you can personally observe something closely.

How is the control variable related to an experiment?

You need the control to test the change of the experiment

How is an experiment related to the scientific method?

You need the scientific method steps so your experiment results can be accurate.

What is the Scientific Method?

a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

hypothesis

explanation for a question or a problem that can be formally tested

compare a hypothesis to an conclusion?

hypothesis is a question that can be tested Conclusion is the result of the tested question

What two words would you use to write a hypothesis?

if, then

control

in an experiment the standard against which results are compared

observation

playing close attention to get data

scientific method

procedures that biologists and other scientists use to gather information and answers