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TAKS Review - Science test
Objective 1 - The Nature of Science
25
Science
11th Grade
06/16/2013

Additional Science Flashcards

 


 

Cards

Term
Bunsen burner
Definition
a metal piece of equipment that controls the source of flame and heat in the lab
Term
IV-C-DV chart
Definition

a three-column chart that shows what the Independent Variable, Constants, and Dependent Variable will be for an experiment

 

the two variables help create the "If...,Then..." hypothesis by taking:

> the IV + a verb

Term

International System of Units (S.I.)

 

Definition

the accepted list of base units for measurement, including:

  1. meter - for distance/length
  2. kilogram - for mass
  3. second - for time
  4. kelvin - for temperature
  5. mole - for amount of substance
  6. candela - for intensity fo light
  7. ampere - for electric current
Term

Kittens Hate Dogs BUT Do Chase Mice

 

Definition

a funny phrase to help remember the prefixes for the metric system units:

 

K - kilo = 1,000

H - hecta = 100

D - deka =   10

B - base =    1

d - deci =        0.1

c - centi =         0.01

m - milli =          0.001

Term
apron
Definition
a clothing item hung around the neck and tied behind the back to protect one's regular clothes from damage during an experiment
Term
beaker
Definition
a glass with measurements on the side that can hold a volume of liquid and can be heated
Term
conclusion
Definition
the final summary of the results of an experiment
Term
constants
Definition

all factors that must be the same for each tested item or group during the experiment

 

1. Same type of plant

2. Same amount of water given

3. Same amount of plant food given

4. Same amount of dirt plant is potted in

Term
control group
Definition

the group/item to which all others being tested are compared. 

the "standard"

Term
dependent variable
Definition

the variable that responds to what is changed by the scientist/experimenter

 

the "then" part of the hypothesis

(....then the plant will not grow and will soon die.)

Term
dimensional analysis
Definition

a way to change from one unit to another unit by moving place by place through connected units

 

 

Term
experiment
Definition
a test created by a scientist/experimenter to see if a suggested explanation for a natural event is accurate and repeatable
Term
experimental group
Definition
the group/item being tested with the independent variable
Term
funnel
Definition
a triangular cone and long tube that is useful for transferring liquids without spilling
Term
goggles
Definition
eyewear worn to protect the eyes from accidents during science experiments
Term
graduated cylinder
Definition
a long, thin tube with a flat bottom and measurements on the side that is used to accurately measure out a specific volume of liquid
Term
hypothesis
Definition

a suggested idea to explain WHY something happens in nature

 

usually written in an "If.....,Then......" statement

 

("If fertilizer is added to plants, Then plant growth will improve.")

Term
independent variable
Definition

the variable that is changed on purpose by the scientist/experimenter

 

the "if" part of a hypothesis

(If a plant gets no sunlight....)

Term
measurement
Definition

a way of describing a thing's size, weight, time, temperature, distance, intensity, etc.

 

it must have a NUMBER and a UNIT

 

70 meter

70 kilograms

70 seconds/meter

 

Term

meniscus

 

 

graduations

Definition

the downward curve of a liquid when sitting in a graduated cylinder

 

this is where you should take a reading at the marking (graduation) along the side of the cylinder to get an accurate measurement

 

 

Term
metric system
Definition

based on units of 10

 

"base" units to which prefixes can be added for larger or smaller amounts:

meter - length/distance

liter - volume

gram - mass

second - time

Kelvin - temperature

Term
microscope
Definition
the most used tool of biologists - used for seeing things that are too small to be seen with the eyes alone
Term
repeated trials
Definition

the number of times the experient is repeated

 

the more time you repeat the same experiment and get the same results, the more VALID your results are.

Term
test tube
Definition
a small, thin tube with a rounded bottom that is used for holding chemicals for observing reactions
Term
triple beam balance
Definition

an instrument used to manually measure MASS

 

the 'rider' adds more weight to move a pointer into a ZERO POINT area to show the measurement in grams

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