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WorksheetsChapter 8: General Science
Total questions: 12
Worksheet time: 6mins
The human circulatory system
uses air to release energy.
processes food and eliminates waste.
moves oxygenated blood throughout the body.
controls movement of joints.
Compasses work by
measuring heat in the air.
reacting to magnetic fields.
repulsing wave currents.
magic.
If an atom has one proton and one electron, the atomic number is
2.
10.
5.
1.
The element with the lowest atomic number is
hydrogen.
helium.
lithium.
uranium.
Absolute zero is equivalent to
0 degrees Kelvin.
0 kelvins.
-273.15 degrees Kelvin.
-273.15 kelvins.
A comet’s tail is visible when
the metal alloys react to the atmospheric change.
the ice and rock collide.
the comet is close enough to the sun.
the comet passes the Kuiper Belt.
What job would you apply for if you wanted to study the life and culture of the past?
genealogist
archaeologist
ecologist
ichthyologist
Which of the following is true about the classification system of biology?
Every animal is categorized according to the proper definition.
Many disagreements occur among scientists about where an organism belongs.
Every organism belongs to the mammalian classification.
Every organism belongs to the felidae classification.
What is the term for an element or molecule that results from a chemical reaction?
reactant
product
molecule
chemical
What causes a blue tail to trail behind a comet?
Vapors from its nucleus are blown by solar winds.
Rock in the comet heats up when it gets closer to the sun.
A comet is made of fire.
Comets do not have blue tails.
What part of the Earth forms volcanoes?
tectonic plates
lava pockets
mantle cracks
magma faults
What are fast-flowing, narrow air currents located in the Earth’s atmosphere called?
density
air mass
jet streams
air chambers
