FOSS Soil, Rocks, and Landforms Investigation 1 Vocabulary

_____________ makes rocks smaller but does NOT change the rock and create a new substance.

• humus

• soil

• physical weathering

• chemical weathering

soil

• a mixture of weathered rocks and humus

• dirt

• when rocks break down into smaller pieces

• when rocks rub and hit against each other

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

weathering

• when rocks break down into smaller pieces

• when rocks hit against each other

• when acid rain breaks rocks apart

• when it is sunny outside

Which are the different ingredients found in soil?

• mud

• air

• water

• rock

• humus

Tags

NGSS.MS-LS2-3

What happens to water when it freezes?

• nothing

• it expands

• it shrinks

• it evaporates

Tags

NGSS.MS-PS1-4

Which soil is formed with the smallest rock particles?

• loam

• sand

• silt

• clay

Humus is made up of what materials?

• small bits of shells and bones

• decomposing plants and animals

• quartz and feldspar minerals

• silt and clay

Tags

NGSS.MS-LS2-3

Place the following sizes of rock in order from smallest to largest

​ (a)   ​ (b)   ​ (c)   ​ (d)   ​ (e)  

​

• clay
• silt
• sand
• gravel
• pebble

The weathering of rock caused by ice freezing in the rocks cracks

• gravity

• frost wedging

• abrasion

• tree root wedging

the rubbing or grinding of rocks against each other causing physical weathering is called

• gravity

• frost wedging

• abrasion

• tree root wedging