EOY Science Assessment

Which graph displays the motion of the wood block?

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Plants obtain the majority of the carbon necessary for building these structural molecules from -

• air

• microorganisms

• soil

• water

Early farmers most likely used seeds only from wheat plants with -

• larger grains that could produce more food per plant

• taller stems that could block sunlight from weeds growing at ground level

• larger flowers that could be sold for additional income

• thinner stems that could endure heavy winds

Which sentence best describes how energy flows through this pyramid?

• Energy is transferred down each level of the energy pyramid

• The energy lost at each level is consumed by organisms in the top level

• Energy is transferred from organisms in one level to those in the level above

• The organisms at the bottom level provide energy directed to organisms in all the other levels

An action-reaction pair of forces exists between -

• The aerialist's feet and the rope

• The rope and the balancing bar

• The two ends of the rope

• The aerialist's arms and legs

Which human activity is most affected by the increasing number of dead zones in the ocean?

• Offshore oil drilling, because water in dead zones is toxic

• Commercial fishing, because fish cannot survive without oxygen

• Commercial shipping, because dead zones change the course of ocean currents

• Sand mining, because oxygen is not available to form the sands on ocean beaches.

Which area of the diagram represents the white dwarfs?

• Area M

• Area X

• Area P

• Area Z

Based on these drawings, which element is the least reactive?

• Neon, because it has two energy levels with eight electrons in the second level.

• Chlorine, because it has three energy levels with seven electrons in the third level.

• Gallium, because it has four energy levels with three electrons in the fourth level

• Tin, because it has five energy levels with four electrons in the fifth level.

Why does autumn start in different months of the year in North America and South America?

• Earth's orbit around the sun is not a perfect circle.

• North America has a larger landmass than South America.

• The moon has a greater pull on South America than on North America.

• Earth's axis has a 23.5 degree tilt.

At which location does the marble have maximum kinetic energy?

• W

• X

• Y

• Z