Scientific Variables
Oceans
Matter
Living Systems
Fourth Grade Review
100
The time it takes to run a mile, depends on the time of day it is run. What is the independent variable in this experiment?
Time of Day
100
What are the three ocean movements? What causes each?
Tides - moon's gravity
Waves - high wind
Currents - changes in salinity and temperature, gentle wind
100
What are the three states of matter? Draw a picture of each.
Solid, Liquid, Gas
100
All living things are made of ________. Cell parts are called ____________.
cells, organelles
100
Define conductors and insulators and give an example of each.
Conductor = allows flow of electricity
Insulator = stops flow or electricity
200
Citrus plants that receive more water will have more juice in the fruit. What is the dependent variable?
amount of juice in the fruit
200
Is the Gulf Stream a warm or cold water current?
Warm
200
Fill in the following chart:
200
Plants can be grouped into ________ and ________.
Vascular and nonvascular
200
What is the difference between kinetic and potential energy?
Kinetic = moving energy
Potential = stored energy
300
Does the height you drop a ball from affect the height it will bounce? What is the dependent variable in this experiment?
Height ball bounces
300
_________ is the base of the ocean food chain and the world’s largest producer of oxygen.
Phytoplankton
300
Fill in the blanks. All matter is made of _____ which combine to form molecules. The two types of molecules are _______ and ______.
Atom, Elements and Compounds
300
Animals can be grouped into ___________ and ____________.
Vertebrates, invertebrates
300
Look at the following food web. Give an example of a producer and a consumer. 
400
List four variables that would have to be controlled in the following experiment: Which brand of laundry detergent will get a dirty spot out of clothes best?
Amount of laundry detergent
Type of stain
How long the stain has been on the clothing
Type of clothing
400
Label the parts of the ocean floor.
A = continental slope
B = seamount/oceanic ridge
C = continental ridge
D/G = oceanic trench
E = underwater volcano
F = continental shelf
400
Label the parts of an atom.
A = electrons
B = neutrons
C = protons
400
Label the parts of the flower.
A = ovules
B = ovary
C = style
D = stigma
E = pistil/carpel
F = anther
G = stamen
H = Filament
I = sepal
J = petal
400
List the three major scientists who contributed to our understanding of electricity.
Thomas Edison = light bulb
Michael Faraday = electromagnetism
Benjamin Franklin = lightening is static electricity
500
Does drinking caffeine increase your heart rate? In the experiment listed above, the consumption of caffeine would be which type of variable?
Independent Variable
500
What factors change as you go deeper into the ocean?
Amount of light decreases
Marine life decreases
Amount of pressure increases
500
What is a mixture and a solution? Give a definition and an example of each.
500
Is this an animal or a plant cell? List the organelles shown.
Animal
Nucleus, Cytoplasm, Cell Membrane, Vacuoles
500
What is the difference between a parallel circuit and a series circuit?
Parallel Circuit = more than one pathway
Series Circuit = one pathway