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Second 9 Weeks __October 27, 2014__

**Perfect Square(noun**__)-__the product of a rational number multiplied by itself.

An example of a **perfect square** is 6.

An example of a perfect square is 25 0r 9.

__Square Root(noun)-__a number that produces a specified quantity when multiplied by itself.

The *square root* of 9 is 3.

The square root of 25 equals 5.

__Radical Sign(noun)-__the sign √, which indicates the square root of the number following (or a higher root indicated by a preceding superscript numeral).

I had to asked Mrs. Turner what a* radical sign*.

Radical signs are square rooting a number.

__Rational Numbers(noun)-__is any **number** that can be expressed as the quotient or fraction p/q of two integers, with the denominator q not equal to zero.

A *rational number* is 25.

These are my notes from math class we were learning about Rational numbers.

__Irrational Numbers(noun)-__is any real **number** that cannot be expressed as a ratio of integers.

A *irrational number* is 2.

I learned about Irrational numbers in 8th grade.

__November 4, 2014__

**Contour Farming()-**is the farming practice of ploughing and/or planting across a slope following its elevation contour lines.
While we are learning about erosion, we learned that *contour **farm* is a way that farmers

are conserving topsoil.

__Chemical erosion()-__changes the composition of rocks, often transforming them when water interacts with minerals to create various chemical reactions.

**Erosion(noun)-**the process of eroding or being eroded by wind, water, or other natural agents.

**Delta(noun)-**a nearly flat plain of alluvial deposit between diverging branches ofthe mouth of a river, often, though not necessarily, triangular:

**Organic(adjective)-**noting or pertaining to a class of chemical compounds that formerly comprised only those existing in or derived from plants or animals,but that now includes all other compounds of carbon.

__November 10, 2014__

__implicit(adjective)-__implied though not plainly expressed.

__explicit(adjective)-__stated clearly and in detail, leaving no room for confusion or doubt.

__textual features()-__ headings, bold letters, italics, and etc.

__analogy(noun)-__a similarity between like features of two things

__figurative(adjective)-__of the nature of