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Victory Elijah Christian College

January Monthly Examination in Science 7- Earth Science

I. True or False

Direction: Write T if the statement is TRUE and F if is FALSE.

! Flo"ing "ater can cause erosion #y dissol$ing minerals in roc%s!&! The smallest sediments in ocean "ater are de'osited on the shore!(! Wind erosion can #e reduced #y 'lanting ro"s of trees around )elds!*! Wind causes less erosion "hen it #lo"s at a higher s'eed!+! More slo"ly ,o"ing "ater can carry larger sediments!! ..... #igger "a$es can carry more sediment!7! When "ind slo"s do"n/ it de'osits smaller sediments )rst!0! Most "a$es stri%e the shore at an angle rather than straight on!

9. Clay and silt are carried in ,o"ing "ater #y sus'ension!1!..... 2laciers 'resently co$er a#out *1 'ercent of Earth3s surface!!..... Continental glaciers are long and narro"!&!Valley glaciers ,o" do"nhill through ri$er $alleys!(!2ra$ity 'ulls soil and roc%s do"nhill!*!Mass mo$ement is al"ays a $ery slo" 'rocess!+!4 landslide may carry a"ay an entire $illage!

II. Multiple Choices

Direction: 5ead the 6uestion carefully! Encircle the correct ans"er!

! Erosion is al"ays follo"ed #y4! e'osition C! Sus'ension8! Weathering ! Saltation

&! Factors that determine the si9e of ocean "a$es include4! s'eed of the "ind C! distance the "ind #lo"s8! length of time the "ind #lo"s! ! all of the a#o$e

(! Wind dro's the sediment it is carrying "hen it4! Slo"s do"n C! 4rri$es at a #each8! :s $ery moist ! 5eaches a certain

altitude

*! 4gents of erosion include4! 2ra$ity C! :ce8! Wa$es ! all of the a#o$e

+! Sediments you are most li%ely to )nd on a #each include4! Clay C! ;ieces of shells

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8! Silt ! 4ll of the a#o$e

! Today/ continental glaciers co$er most of4! 4las%a C! 2reenland8! Canada ! 4ll of the a#o$e

7! Erosion #y ocean "a$es can cause4! Sand#ars C! Cli

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III. Identifcation.

Direction: Choose the a''ro'riate term to com'lete each sentence #elo"!

! When "ind #lo"s o$er the surface of a #ody of "ater/ it causes !&! 4 large mass of ,o"ing ice is aAnB !(! 4n arti)cial #arrier island is called aAnB!*! 4 dust storm is more li%ely to occur in a climate!

+! The 'rocess in "hich a glacier scra'es underlying roc% is called

! The trans'ort of sediments is called 7! Wind carries clay and silt #y.0! Wa$es that stri%e the shore at an angle cause the 'rocess of !! is the 'rocess #y "hich eroded sediments are dro''ed

some"here else!1!Water that runs o$er the land during a hea$y rain is called !!occurs "hen "ind #lo"s sediments in short ho's&!The 'rocess in "hich a glacier 'ic%s u' sediment is called .............!(!The most destructi$e ty'es of mass mo$ement are landslides and ..........!*!:f a landslide ,o"s into the ocean/ it may cause aAnB ..........!

+!Mudslides occur "here the soil consists mostly of .........

I!. Essa"

Direction: 4ns"er the follo"ing 6uestion #rie,y! A+ 'ts!B

! Com'are and contrast the erosion caused #y a stee' mountain stream

"ith the erosion caused #y a ri$er ,o"ing o$er nearly ,at land!

- Wa$es - 5un o< - 4#rasion

- ?ong shore drift - ry - ;luc%ing- 8rea% "aters - ?oess - Mudslides- Erosion - Saltation - Tsunami- e'osition - 2laciers - Clay