grade4

Question 1

to be slowly destroyed into bits in the presence of water, soil and air

Answer 1

decay

Question 2

to take in or drink up

Answer 2

absorb

Question 3

having small holes that allow air or liquid to pass through

Answer 3

porous

Question 4

materials that do not allow air or liquid to pass through

Answer 4

non-porous

Question 5

to fall to the bottom of water

Answer 5

sink

Question 6

to stay on top of water

Answer 6

flota

Question 7

factors that contribute to decaying process of materials

Answer 7

sunlight, water, air, soil, microorganism

Question 8

decaying materials buried over millions of years becomes

Answer 8

coal, oil, natural gas

Question 9

action or process of making land, water, air dirty and not safe to use

Answer 9

pollution

Question 10

waste materials that are recycled as fertilizer

Answer 10

compost

Question 11

capable of being slowly destroyed and broken down into very small parts by natural process

Answer 11

biodegradable

Question 12

factory returnables, fertilizers, feeds, fermentables, fuel, fine craft, and filling materials

Answer 12

multi-F’s Recycling Scheme

Question 13

collecting, processing and manufacturing materials instead of throwing them away

Answer 13

recycling

Question 14

state of matter that has definite shape and volume

Answer 14

solid

Question 15

characteristic of solid materials

Answer 15

color, texture, weight, shape, size

Question 16

ways on changing solid materials

Answer 16

cutting, coloring, folding, tearing, twisting, bending, stretching, pressing, crumpling

Question 17

what happen if solid materials where heated

Answer 17

solid materials turns to liquid

Question 18

5r’s

Answer 18

recycle, reuse, reduce, rot, repair