EDinformatics Science Challenge
PART 1-- KNOWLEDGE AND CONCEPTS

Topic Questions Percent Total
Life Science #2,#3,#4,#8,#10,#18,#19 28%
Chemistry #5,#6,#13,#17,#21,#24,#25 28%
Physics #9,#11,#14,#15,#23 20%
Earth Science #1,#7,#12,#16, #20,#22 24%

--Try the whole test or take by subject area (s)--

SEE ALSO:
PART 2-- REASONING AND ANALYSIS


Instructions
  • Please enter an identity code using the following information:
    username (or code name), grade, city, state, country

    Example: cooljr/grade8/utica/ny/usa


  • Click on the circle to answer each multiple choice question.
  • To answer the free form questions type in your answer
  • Use the scroll down bar to advance to the next question.
  • When you have completed all the questions, press the "Submit" button at the bottom of the test.
  • Your test results and links for assessing your results will appear within seconds.

    The bullets in the bottom corner of each problem indicate the question has not been answered. Questions left unanswered will be given a value of nr(no response).


    1)The earth is composed of four layers.

    Which layer is continuously moving because of convection currents?

    A) inner core
    B) outer core
    C) mantle
    D)crust

    Need help?
    Read : Layers of the Earth
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    2) Mushrooms that grow on the sides of trees in a forest ecosystem are best classified by which of the following types of organisms?

    A) consumers
    B) decomposers
    C) predators
    D) producers

    Need help?
    Read What is the Food Chain
    ____________________________________________________________________________

    3) A student eats a bacon, lettuce and tomato sandwich for lunch. Which of the following is NOT correct?

    A) The enzyme ptyalin begins to digest starch in bread into smaller molecules (maltose).
    B) Digestion of protein found in the bacon begins in the stomach.
    C) Digestion of fat found in the bacon occurs mostly in the small intestine.
    D) Cellulose in lettuce is digested in the large intestine to sugar.

    Need help?
    Read Where is Food Digested
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    4) To stay alive your body must maintain a constant state of internal conditions. Your body temperature must not vary by more than a few degrees, the pH of your blood must be kept between 7.35 and 7.45, and the glucose level in your blood must be maintained within a small range.

    These functions are all part of a mechanism that allows the body to maintain a balance between itself and the environment. What is that mechanism called?

    A) homeostasis
    B) metabolism
    C) osmosis
    D) diffusion

     

    Need help?
    Read about this mechanism.

    ____________________________________________________________________________

    You may use the periodic table for questions 5 and 6:

    5) How many neutrons does an atom of beryllium have?

    A) 4
    B) 5
    C) 9
    D) 13

     

    Need help?
    Click for Periodic Table of Elements
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    6) Group 18 has which of the following properties?

    1) all the elements are noble gases
    2) all the elements have a "full" outer shell of electrons
    3) all the elements easily form compounds with other elements
    4) all the elements have 2 electrons in their first shell

    A) 1,2 and 4
    B) 2 and 4
    C) 3 and 4
    D) 2,3 and 4
    E) 1,2,3 and 4

     

    Need help?
    Click for Periodic Table of Elements

    ___________________________________________________________________________

    7) The number of stars in our own Milky Way Galaxy is in the

    A) thousands
    B) tens of thousands
    C) millions
    D) billions

     

    Need help?
    Read about The Milky Way

    ___________________________________________________________________________

    8)A gene is a length of DNA that contains the instructions to make a chemical in your body. Most of your DNA is located in the nucleus of the cell. . The DNA in the human genome provides approximately 23,000 codes for different proteins. What is the site in the cell that manufactures these proteins?

    image from Wikipedia

    A) mitochondria
    B) nucleus
    C) lysosyme
    D) ribosomes

    Need help?
    Read about the Human Genome
    ___________________________________________________________________________

    9) Shown below are the wavelengths for blue red and green light. Which of the following wave patterns is red light?

    A)
    B)
    C)

    Need help?
    Read about the Electromagnetic Spectrum

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    10) What is formed immediately after fertilization occurs?

    A) sperm
    B) egg
    C) embryo
    D) zygote

     

    Need help?
    Read about Reproduction

    ______________________________________________________________________________

    11) There are six classical simple machines. They are: lever, wheel and axle, pulley, inclined plane, wedge, and screw. What two simple machines form a pair of scisssors?

    A) screw and wedge
    B) wedge and inclined plane
    C) wedge and lever
    D) screw and lever

    Need help?
    Read about Simple Machines
    _____________________________________________________________________________

    12) Which statement correctly compares seismic P-waves and seismic S-waves?

    A) P-waves are longitudinal waves and travel slower than S-waves.
    B) P-waves are transverse waves and travel slower than S-waves.
    C) P-waves are longitudinal waves and travel faster than S-waves.
    D) P-waves are transverse waves and travel faster than S-waves.

     

    Need help?
    Read : Seismic Waves
    ____________________________________________________________________________

    13) Which is a chemical change?

    A) melting an ice cube
    B) dissolving sugar in boiling water
    C) boiling an egg
    D) crushing a can

     

    Need help?
    Read abut Chemical and Physical Changes
    ____________________________________________________________________________
    14) Which alternate form of energy is the most efficient, and cheapest?

    A) solar
    B) wind
    C) nuclear
    D) coal

    Need help?
    Read abut Alternate Sources of Energy
    ____________________________________________________________________________

    15) A swinging ball is released from point A. Which statement best applies.

    A) The minimum potential and kinetic energy are both at point B.
    B) The maximum potential energy is at point A, maximum kinetic energy is at point B.
    C) The maximum potential energy is at point C, maximum kinetic energy is at point A.
    D) The maximum kinetic energy is at point A, and maximum potential energy is at point B.

     

    Need help?
    Read abut Kinetic and Potential Energy
    ___________________________________________________________________________

    16) A strong cold air mass moves into an area of warm air as shown in the image. Which statement is NOT correct about this system of weather.

    Image from NASA

    A) The cold air holds more moisture than warm air.
    B) The heavier cold air pushes up the lighter warm air.
    C) As cold air rises it will cause water vapor to be pulled out of warm air
    D) Air masses with different densities do not easily mix.

     

    Need help?
    Read about precipitation
    ___________________________________________________________________________
    17) What factor distinguishes a suspension from a colloid?

    A) Light reflects off the particles of a suspension but does not reflect off the particles of a colloid.
    B) The particles of a suspension will sink out if left over time to rest. The particles of a colloid will not sink out.
    C) Suspensions are clear, colloids are cloudy.
    D) Suspensions cannot be filtered., colloids can be filtered.

    Need help?
    Read about Suspensions, Colloids
    __________________________________________________________________________
    18) Because a tundra is a biome where the tree growth is hindered by low temperatures and short growing seasons, it is most likely one would find

    A) deep-rooted plants.
    B) deciduous trees.
    C) conifers and small evergreen trees.
    D) mosses, grasses, and small shrubs.

     

    Need help?
    Read what about biomes.
    _________________________________________________________________________
    19) Living organisms are currently subdivided into 6 Kingdoms (US system), including Archaebacteria, Eubacteria, Protists, Fungi, Plants, and Animals. What is true about Amoeba and Yeast.

    A) They are both in the same kingdom and both use asexual reproduction.
    B) They are in different kingdoms and both use asexual reproduction.
    C) They are both in the same kingdom but the amoeba uses asexual reproduction and yeast uses sexual reproduction.
    D) They are in different kingdoms and both reproduce using sexual reproduction.

    Need help?
    Classification of Living Kingdoms
    ____________________________________________________________________
    20) On earth heat travels by conduction, convection and radiation. How does heat travel in space?

    A) only convection
    B) only radiation
    C) conduction and convection
    D) conduction and radiation

     

    Need help?
    Read abut Conduction, Convection and Radiation
    __________________________________________________________________________
    21) The pH scale is used to describe how acidic a solution is. Substances with a pH lower than 7 are considered acids. Substances with a pH above 7 are considered bases. What range pH would you find for seawater?

    A) 6.5 -7.0
    B) 7.5 -8.4
    C) exactly 7.0
    D) 5.5 -6.5

     

    Need help?
    Read about pH
    __________________________________________________________________________

    22) What motions on earth are subject to Coriolis forces?

    A) All Objects on Earth will always deflected to the right of their path of motion regardless of hemisphere.
    B) All objects are always deflected to the left of their path of motion regardless of hemisphere.
    C) Only motions along the equator are subject to Coriolis deflection.
    D) In the northern hemisphere the Coriolis effect causes deflection to the right and in the southern hemisphere to the left.
    E) In the northern hemisphere the Coriolis effect causes deflection to the left and in the southern hemisphere to the right.

     

    Need help?
    Read about the Coriolis Effect
    __________________________________________________________________________

    23) Which of the following statements are true about acceleration?

    1) Acceleration is a change in velocity.
    2) An applied force is required for acceleration to occur.
    3) Acceleration can be either + or - in value.
    4) A graph of x vs. t where x represents distance and t is time will be linear for a constant accelerating object.

    A) 1 and 2
    B) 1,2 and 3
    C) 2 and 4
    D) 1,2,3,4

     

    Need help?
    Read about Acceleration
    ______________________________________________________________________


    24) Which characteristics does carbon possess that makes it so unique for life and organic chemistry?

    1) Carbon can form single, double and even triple bonds with other atoms.
    2) Carbon has both metal and non metal properties
    (3) There appears to be almost no limit to the number of different structures that carbon can form
    4) Carbon is one of the heaviest elements on earth.

    A) 1,2, 3
    B) 1, 3,4
    C) 1,2
    D) 1, 3

     

    Need help?
    Read about Carbon
    ______________________________________________________________________
    25) A chemical equation has the form: 6CO2 + 6H2O + sunlight ---> C6H12O6 +6O2

    Which statements apply to the above chemical equation?

    1) The substance C6H12O6 is a compound called glucose.
    2) The substance C6H12O6 is a mixture consisting of carbon, hydrogen and oxygen.
    3) The chemical equation is the simplified formula for photosynthesis which occurs in the mitochondria of plants.
    4) The word equation for the chemical equation is: carbon dioxide + water + light energy ---> glucose + oxygen
    5) The chemical equation is the simplified formula for photosynthesis which occurs in the chloroplast of plants.

    A) 2.3.4
    B) 1,4,5
    C) 1,3,4,5
    D) 2,4,5
    E) all of the above are correct

    Need help?
    Read about this question

    _____________________________________________________________________



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