What type of star is our Sun?
A) low-mass star
B) intermediate-mass star
C) high-mass star
D) brown dwarf
A
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How is radioactive dating used to determine the age of an object?
a. Both the amounts of radioactive and decay material are measured. Using these with the radioactive material's half-life, the age can be estimated. b. The amount of radioactive material is measured. Using this with the radioactive material's half-life, the age can be estimated. c. The amount of decay material is measured. Using this with the radioactive material's half-life, the age can be estimated. d. The amount of heat generated by radioactive dating is measured to determine age.
Belts and zones are clouds that wrap around the entire planet
a. True b. False Indicate whether the statement is true or false
Which of the following provides evidence that light is made of waves?
A) The individual dots seen on a photographic plate when a photo is taken at extremely short exposure times B) Interference effects seen when light passes through a narrow opening C) Both of the above. D) Experiments that spread light out into a spectrum of colors E) All of the above.
In silicones the backbone polymer is composed of alternating silicon atoms and _________atoms.
Fill in the blank(s) with the appropriate word(s).