A mix of humus, sand, silt, clay, gravel, and/or pebbles.

• abrasion

• chemical reaction

• weathering

• soil

Bits of dead plan and animal parts in the soil

• gases

• exhaust

• humus

• pebbles

Tags

NGSS.MS-LS2-3

Geological word used to describe the breakdown of rock into smaller pieces

• weathering

• chemical reaction

• accumulation

• expansion

Provides nutrients and helps soil retain water

• soil

• humus

• volcanoes

• abraision

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Rocks, humus, live organisms, water, and air are all component parts of soil that work together as a __________.

• chemical reaction

• system

• weathering

• acid

Tags

NGSS.MS-LS2-1

When rocks break into smaller piece without changing what the rock is made of, it is called ___________.

• chemical reaction

• expansion

• physical weathering

• liquids

Which is a type of physical weathering that involves "rubbing together" materials?

• abrasion

• allignment

• contraction

• expansion

When water freezes it _______.

• evaporates

• expands

• disappears

• shrinks

Tags

NGSS.MS-PS1-4

Water freezes when the temperature is _________.

• below 10 degrees Celsius

• Below 20 degrees Celsius

• Below 0 degrees Celsius

• Below 30 degree Celsius

Tags

NGSS.MS-PS1-4

The process by which two or more materials mix in a way that forms new materials.

• physical weathering

• abrasion

• humus

• chemical reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5