A natural event

Sensing anything involves both physiological and behavioral components. We have physiological receptors that allow our nervous system to capture sensory information (for example light waves – seeing, oscillations of the air – hearing, or internal chemical changes – feeling). We also have a learning history that makes us aware of only the sensory information that has been historically important.

This question is worth 10 extra credit points.  A student is attempting to determine the density of an irregularly shaped metal object. The mass of the metal is measured as 85.42 grams using an analytical balance. To find the volume, the student uses a graduated cylinder partially filled with water. The initial volume of water is 45.0 mL. After carefully adding the metal sample, the water level rises to 54.8 mL. The student records the following calculation for density: Densitymetal = 85.42 g x 54.8 mL = 4681.0g/cm She concludes that because this value is much larger than the density of water (1.00 g/mL), the metal must float. Task:Identify two errors in the student’s calculation and/or reasoning. Consider errors related to the mathematical setup, the use of units, significant figures, and the interpretation of the density concept. For each error, explain why it is incorrect and provide the correction.

Solutions of sodium nitrate and potassium chloride are mixed together. What is expected to occur?

Within Olmec society, the Olmecs constructed large stone monuments called __________________________________.  To date, seventeen stone monuments have been discovered with the largest being the size of an elephant. [BLANK-1]

Which of the following language families is not a predominant language families that is spoken on the African continent?

In the attempt to return stability to the Roman Empire, Diocletian implemented all of the following reforms except:

What is the name given to the agricultural practice used by Aborigines in which Aborigines deliberately burned the landscape to promote the growth of edible plants?  Make sure to answer the question using a full, complete sentence.

The kingdom of Aksum grew rich trading what type of goods?

What is the name of the agricultural method used by Amerindian farmers on the mountain sides of the Andes Mountains?  Make sure to answer the question using a full, complete sentence.