Nature of Science Test

What is the proper procedure for heating a substance in a test tube

Don’t touch the test, use the tongs provided for it and when you’re done with the burner safely dispose of the liquid in the tube and completely turn off the burner and unplug it

What should you do if a liquid is splashed in your eyes

Immediately tell your instructor and rush over to the eye wash station and rise the chemical out your eye

What is the procedure for disposal of excess solutions poured into a test tube

Ask teacher for what to do with your chemicals

Why do we study Biology

To make sense and understand the world around us

What does the Independent Variable

What you change in an experiment

What is the dependent variable

What you measure as you complete the experiment

Constants

What says the same in the experiment state as many as you can

What is the control

What your using as a comparison

What are trials

numbers of times the experiment is completed

What is a hypothesis

A possible explanation for an event or set of observations (written in “if, then” statements) NO personal pronouns

Define experiment

Testing your hypothesis- gathering data (quantitative) charts, graphs

Define conclusion

Using evidence to determine if the hypothesis was supported or refuted

Title of Projects

The effect of _____ IV____ on____ DV___

What does law mean

generalized statement based on repeated observations and experimental evidence that describes a fundamental, consistent pattern in nature

What does Theory mean

A well tested explanation

What are the steps of the scientific Method in order

Recognize and state the problem (in the form of a question)

Collect information about the problem (Research)

Form a hypothesis

Test your hypothesis (Experiment)

Analyze your data

Draw conclusion- state whether your hypothesis was proved or disproved

Some organisms are unicellular

single celled

multi-cellular

more than one cell

Grow-

to get bigger

Development-

mature

When is quantitative data used

You use it when your using number?

When do you use Qualitative data

You use it when you are using your senses

When is bar graph used?

used to compare distinct groups or changes in categories

When do you use a line graph

used for trends over time or continuous data,

Define Hypothesis

It’s an educated guess in the form of an if then statement

Define a theory

A well tested explanation

Define a law

Law is a statement that describes a consistent pattern in nature under specific conditions, often expressible as a mathematical formula

Name some safety procedures for completing a lab

Wear Goggles

Wear closed toe shoes

Wear apron

Don’t touch broken glass

Don’t put chemicals back into the same container

Bar=

Line=

Comparison

Change over time

Detrimental

bad, negative

Which of the following is a valid hypothesis for why a plant appears to be dying?

The plant is not being watered enough.

The plant is being watered too much.

 The plant is receiving too much sunlight.

Which of the following variables present in Redi’s experiment on spontaneous generation is NOT a controlled variable?

 gauze covering that keeps flies away from meat

When enough experimental data support a hypothesis, the hypothesis becomes a(an)

theory

Which of the following is NOT a characteristic of all living things?

 ability to move

Which of the following characteristics of living things best explains why birds fly south for the winter?

 Living things respond to their environment.

Cell specialization in multicellular organisms allows cells to

 perform different functions.

The process by which organisms keep their internal conditions fairly constant is called

 homeostasis.

What is the term for the land, water, and air on Earth?

biosphere

What is the term for a group of organisms of one type living in the same place?

population

Which level of organization includes all of the other levels?

ecosystem

Which of the following is NOT considered a safety procedure?

 If in doubt about any part of an activity, trust your instincts.

In science, a hypothesis is useful only if

 it can be tested.

A theory

 may be revised or replaced.

Which is NOT a unit of measurement in the metric system?

inch

The basic unit of mass is the

gram

Which of the following is NOT a part of how scientists work?

 guessing

A controlled experiment allows the scientist to isolate and test

 a single variable

The ability to reproduce results is an important part of any

 experiment

When enough experimental data support a hypothesis, the hypothesis becomes a (an)

theory

How many centimeters are in 2.4 km?

 240,000

In the metric system, the basic unit of length is the

meter

An instrument that allows light to pass through the speciman, and uses two lenses to form an image is a (an)

 

compound light microscope

Safety procedures are important when working

in a laboratory

in the field

 with animals

What type of living organisms should you NOT come into contact with in your biological laboratory?

 organisms that cause disease

Because you come in contact with organisms you cannot see, what safety procedure must be followed?

 wash your hands thoroughly after completing the activity