Water and Wind Erosion — Cumulative exam Answers
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A stable atom that has a large nucleus most likely contains
A
more neutrons than protons.B
more protons than neutrons.C
equal numbers of protons and neutrons.D
changing numbers of protons and neutrons.22
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The atomic symbol represents potassium-40 (K-40), a radioactive isotope that has 19 protons and 21 neutrons. Which atomic symbol could represent an isotope that results from the decay of K-40?
A
Superscript 40 subscript 18 upper A r.
B
Superscript 40 subscript 18 upper K
C
Superscript 42 subscript 20 upper C a
D
Superscript 42 subscript 20 upper K.
23
Which represents the balanced nuclear equation for the beta plus decay of C-11?
A
Superscript 11 subscript 6 upper C right arrow superscript 11 subscript 5 upper B plus superscript 0 subscript plus 1 e.
B
Superscript 11 subscript 6 upper C right arrow superscript 11 subscript 7 upper N plus superscript 0 subscript plus 1 e.
C
Superscript 11 subscript 6 upper C right arrow superscript 11 subscript 7 upper N plus superscript 0 subscript negative 1 e.
D
Superscript 11 subscript 6 upper C right arrow superscript 11 subscript 5 upper B plus superscript 0 subscript negative 1 e.
24
How does litmus paper identify a base?
A
A base turns red litmus blue.B
A base turns blue litmus red.C
A base turns orange litmus red.D
A base turns yellow litmus blue.25
How do oxbow lakes form?
A
Rivers are dammed, and the water builds up, creating a lake.B
Runoff pools in areas of low elevation, creating a temporary lake.C
Rivers wear away banks until the bank is broken and the river flows straight.D
Glaciers leave deep channels in the ground, which fill with water and become a lake.Did you find these answers helpful?
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