mechanical and chemical weathering

Question 1

WHAT IS WEATHERING?

Answer 1

BREAKDOWN OF ROCKS INTO SMALLER PIECES BY NATURAL PROCESSES

Question 2

PHYSICAL WEATHERING

Answer 2

CHANGING THE SIZE AND SHAPE OF A ROCK

Question 3

WHAT ARE THE AGENTS OF WEATHERING

Answer 3

HYDROSHERE (WATER) ATMOSPHERE (WIND), AND PLANTS AND ANIMALS WHICH CHANGE THE CHARACTERISTICS OF ROCKS.

Question 4

IS FROST WEDGING PHYSICAL OR CHEMICAL

Answer 4

PYSICAL

Question 5

FROST WEDGING

Answer 5

• LIQUID FILLS THE CRACKS IN ROCKS WHICH THEN FREEZES, FORCING THE WATER TO EXPAND. THEN, THE ICE MELTS AND SINKS DEEPER IN THE CRACK. REPEATS.

Question 6

THERMAL EXPANSION

Answer 6

HEATING AND COOLING OF ROC, CAUSES EXPANSION AND CONTRACTION.

Question 7

UNLOADING

Answer 7

ROCK BREAKS DOWN INTO LEAVES OR SHEETS ALONG JOINTS

Question 8

ABRASION

Answer 8

WEATHERING OF ROCK BY ROCKS RUBBING TOGETHER. HAPPENS MAINLY IN THE TOP OF STREAMS AND RIVERS.

Question 9

ROOT ACTION

Answer 9

ROOTS OF TREES GROW INTO THE CRACKS OF ROCKS AND BREAK THE ROCKS AS THEY GO.

Question 10

CHEMICAL WEATHERING

Answer 10

BREAKS DOWN ROCKS BY CHANGING THEIR CHEMICAL COMPOSITION.

Question 11

WHAT CAUSES CHEMICAL WEATHERING?

Answer 11

EXPOSURE TO OXYGEN, WATER, AND CARBON DIOXIDE.

Question 12

WHAT FACTORS AFFECT WEATHERING

Answer 12

ROCK CHARACTERISTICS: MINERAL COMPOSITION AND CRACKS CLIMATE CLIMATE: TEMP AND MOISTURE

Question 13

PARTICLE SIZE:

Answer 13

SMALLER PARTICLES BREAK DOWN FASTER THAN LARGER PIECES