Chemistry rock and soil

Question 1

What is bigbang theory?

Answer 1

Bigbang theory is an extremely huge and hot explosion that made the earth

Question 2

It cooled down and form the first element,what is the element?

Answer 2

H(hydrogen)& He(helium)

Question 3

How does clouds form? Explain!

Answer 3

The atoms were drawn together by the force of gravity and then form huge gas called clouds

Question 3

What is the 1st generation stars?

Answer 3

H&He stars

Question 4

How does other elements form?

Answer 4

It happen when a stars has used up all its supply of hydrogen to make helium it makes other elements by nuclear fusion.

Question 5

That elements include

Answer 5

Carbon,Nitrogen,Oxygen,Sodium,Magnesium,Aluminium,Silicon,Phosphorus,Sulfur,Chlorine,potassium,calcium,chromium,and iron

Question 6

What does nuclear fussion process?

Answer 6

The process that inside each sphere and the force of gravity drew the atoms closer still until the temperature and pressure became so great.

Question 7

How does nebula form?

Answer 7

The stars may then swell up and form a red giant star,then release gas and dust as a nebula around it,and shrink to form a white dwarf star

Question 8

Supernova is formed from

Answer 8

Very large stars that do not release gas and dust

Question 9

core divided into two parts

Answer 9

Inner core and outer core

Question 10

The inner core is a ball of

Answer 10

iron and nickel

Question 11

inner core ….. km in diameter

Answer 11

2740 km in diameter

Question 12

The inner core are also radioactive present,like uranium,and they generate heat,which keep the core at about …… degree celcius

Answer 12

5000 degree

Question 13

The outer core is ….. km thick

Answer 13

2000 km thick

Question 14

That composed of more iron and nickel

Answer 14

outer core

Question 15

The mantle is made of

Answer 15

rocky material

Question 16

the mantle is …… km thick

Answer 16

2900 km thick

Question 17

The mantle composed mainly of

Answer 17

element iron,silicon,oxygen,magnesium

Question 18

compounds is

Answer 18

the atoms of these elements that are joined together to make substance

Question 19

main composed in mantle

Answer 19

silicates (made from silicon and oxygen atoms)

Question 20

The mantle is very hot,it is ….. degree celcius at a depth of ….. km below the Earth’s surface

Answer 20

1500 degree celcius at a depth of 2000 km below the earth’s surface

Question 21

The mantle is very hot,it is ….. degree celcius at a depth of ….. km below the Earth’s surface

Answer 21

1500 degree celcius at a depth of 2000 km below the earth’s surface

Question 22

The crust is made from

Answer 22

much cooler rocks than the mantle

Question 23

what is magma?

Answer 23

magma is molten rock that is made from some of the rocks in the lower crust and upper mantle

Question 24

extrusive igneous rock

Answer 24

rock that escapes from the earth surface through a volcano/lava that comes out to the surface through the volcano (basalt)

Question 25

intrusive igneous rock

Answer 25

The rocks that cools down inside the earth's crust and will come out to the surface in solid form(granite)

Question 26

igneous rock also called

Answer 26

fire rocks because they form from magma

Question 27

sedimentary rocks

Answer 27

occurs under the sea by settling and made from minerals and living things(sandstone and mudstone)

Question 28

metamorphic rocks

Answer 28

is made up from sedimentary rocks When Sedimentary rocks are buried deep beneath the Earth's surface, great pressure and tremendous heat change these rocks into new rocks containing different minerals. And metamorphic rocks can form magma/melting to magma. (slate)

Question 29

3 kinds sedimentary rocks

Answer 29

rocks from rocky fragments,rocks from parts of living things,rock from dried up seas

Question 30

metamorphose is

Answer 30

The rise in temperatures and pressure cause the rocks to change their form.

Question 31

What cause the rock to metamorphose

Answer 31

the rise in temperature and pressure

Question 32

What is minerals?

Answer 32

Minerals is a substance that has formed from one or more elements in the earth

Question 33

Minerals can be recognised by

Answer 33

colour,shape,lustre,hardness,the colour of the streak

Question 34

What is soil?

Answer 34

Soil is made from small particles or fragments of rocks

Question 35

Weathering is

Answer 35

Process in which rock breaks up to form fragments

Question 36

2 kinds of weathering

Answer 36

Physical weathering and chemical weathering

Question 37

Physical weathering

Answer 37

Changes in temperature,the effect of ice,abrasion,the effect of plants

Question 38

Changes in temperature

Answer 38

When a rocks heats up,the minerals in it expand.

Question 39

The effect of ice

Answer 39

The ice pushes on the sides of the pores and makes the rock crumble.

Question 40

Abrasion

Answer 40

When pebbles are carried in a fast flowing river

Question 41

The effect of plants

Answer 41

Particles of rock blown by the wind settle in cracks in rocks and form a soil in which plant roots can grow

Question 42

Chemical weathering

Answer 42

Rainwater,hot and wet weather conditions

Question 43

rainwater

Answer 43

is naturally slightly acid due to carbon dioxide from the air dissolving in it

Question 44

Hot and we weather conditions

Answer 44

speed up chemical reaction such as those that breaks down rocks

Question 45

humus

Answer 45

is a substance remains of plants and animals rot and humus also contain a lot nitrogen so that's why the litter layer more fertile

Question 46

topsoil

Answer 46

is a mixture of humus and rocky fragments

Question 46

topsoil

Answer 46

is a mixture of humus and rocky fragments

Question 47

Subsoil

Answer 47

is paler than the topsoil because it contains much less humus

Question 48

Groups rocky fragments

Answer 48

small stones,sand,,silt,clay

Question 49

Properties of soil

Answer 49

Soil texture (gritty,silky,sticky),drainage(the abbility to hold water),the amount of air,the soil pH

Question 50

The percentages of air:

Answer 50

volume of air : volume of soil x 100

Question 51

Loam

Answer 51

40% sand 40% silt 20% clay

Question 52

urutan planet

Answer 52

sun,mercurius,venus,earth,mars,jupiter,saturnus,uranus

Question 52

urutan planet

Answer 52

sun,mercurius,venus,earth,maers,jupiter,saturnus,uranus

Question 53

milky way

Answer 53

produces billions of galaxies,vast island of stars,and our galaxy

Question 54

3rd generation stars

Answer 54

sun