Unit 1 Bio
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What property of water allows life to exist under frozen surfaces in polar seas?
Back
Water is less dense as a solid than as a liquid, allowing ice to float and insulate the water below.
2.
FLASHCARD QUESTION
Front
Which measuring tool provides the most accurate measurement of liquid volume?
Back
A graduated cylinder is typically more accurate than a beaker or flask.
3.
FLASHCARD QUESTION
Front
What term describes substances that do not mix with water?
Back
Hydrophobic; these substances are non-polar and do not interact with water.
4.
FLASHCARD QUESTION
Front
In an experiment, what is the variable that is measured and recorded called?
Back
Dependent variable; it is affected by changes in the independent variable.
5.
FLASHCARD QUESTION
Front
Which piece of equipment is NOT useful for transferring liquids?
Back
Petri dish; it is used for culturing cells and not for transferring liquids.
6.
FLASHCARD QUESTION
Front
What is the definition of a hydrophilic substance?
Back
A hydrophilic substance is one that is attracted to water and can dissolve in it.
7.
FLASHCARD QUESTION
Front
What is the role of the independent variable in an experiment?
Back
The independent variable is the factor that is changed or manipulated to observe its effect on the dependent variable.
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