html page creator

SCIENCE TRIVIA XII

111) What phylum consists of single-celled animals?


Historically, protozoa are defined as single-celled organisms with animal-like behaviors, such as motility and predation.

112) DNA is organized into long structures called ________?


DNA is organized into long structures called chromosomes. During cell division these chromosomes are duplicated in the process of DNA replication, providing each cell its own complete set of chromosomes.

113) How far is Earth from the center of the Milky Way Galaxy?


Earth is located about 25,000 light-years from the galactic center and 25,000 light-years away from the rim. So basically, if you were to think of the Milky Way as a big record, we would be the spot that's roughly halfway between the center and the edge.

114) What is the most volcanically active body in our solar system?


Jupiter's moon Io is the most volcanically active body in our solar system. Active volcanoes constantly spew material onto Io's surface.

115) How much salt is there in the human body?


There is about 1/2 lb or 250g of table salt (NaCl) in the body of an average adult human.

116) What is the hardest substance in the human body?


Enamel is the hardest substance in the human body and contains the highest percentage of minerals, 96%, with water and organic material composing the rest. The primary mineral is hydroxyapatite, which is a crystalline calcium phosphate.

117) What is the brightest planet in Earth's sky?


Venus is the brightest planet in Earth's dark skies. Only the moon -- which is not a planet -- is brighter. Venus outshines the other planets because it is closer and its thick cloud cover are is excellent for reflecting sunlight.

118) Which of the following is NOT a noble gas?


Noble gas atoms have complete outer valence shell electron configuration. Hydrogen does not.

119) What is the only letter of the alphabet that doesn't appear on the Periodic Table?


The only letter that doesn't appear on the Periodic Table of Elements is J.

120) What inorganic molecule does lightning produce?


Lightning strikes produce ozone (O3) through electrical excitation of Oxygen molecules.


SHARE THIS PAGE!