Ks3 s

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.

Help!

Question

Answer

Some rocks may be different shapes and sizes as they be changed by the conditions in their

environment.

🗑

The breakdown of rocks into smaller fragments is called

weathering.

🗑

In alphabetical order, the 3 types of weathering are;

biological weathering, chemical weathering and physical weathering.

🗑

Freeze-thaw weathering is the repeating of both

freezing and thawing. This is done to both

water and ice in the

gaps inside

rocks. When the water freezes, turns to ice and expands making the gaps

larger and eventually causes pieces of rocks to

break away.

🗑

Often with freeze-thaw weathering, the water off freezes during

day, while it thaws during

night. This process is

repeated until the fragment of rock

breaks off.

🗑

Freeze-thaw weathering is a type of

physical weathering.

🗑

Exfoliation weathering or

onion skin weathering is the repeating of both

heating and cooling of

rocks, which causes the surface layer to

flake off, possibly leading to that rock

splitting.

🗑

With exfoliation weathering, often the heating is done during the

day, while the cooling is done during the

night.

🗑

Exfoliation weathering is a type of

physical weathering, where as that rock keeps expanding and

contracting, pieces of that rock's surface begin to

flake and eventually

fall off.

🗑

With exfoliation weathering, during the day, the surface of that rock is heated by the

sun, causing that rock to

expand. During the night, instead of being heated, that rock

cools and then

contracts.

🗑

With biological weathering, plant roots and

shoots can get into minute

cracks in

rocks. As the plant grows, roots and shoots can push their way through the

rock, which (in those rocks) forces

cracks. The growth of cracks in this way causing small pieces of rock to

break off.

🗑

Chemical weathering is the break-down of

rocks when there are

chemical reactions between

acid rain and

certain minerals in

rocks. Some types of rock are easily weathered by chemicals. For example, limestone and chalk are made of a mineral called calcium carbonate; when acidic rainwater falls on limestone or chalk, a chemical reaction happens: new [] substances are formed in t

soluble. These are washed away and the rock is

🗑

Rainwater is naturally acidic because rainwater reacts with

carbon dioxide in the

air to form

carbonic acid.This type of acid rain is weakly

acidic and reacts

slowly with

🗑

The burning of fossil fuels produces both

oxides of Sulphur and Nitrogen which make rainwater more

acidic. This type of acid rain reacts

quickly with

minerals and weathers rock more

🗑

3 ways that rock fragments can be transported are(in alphabetical order);

glaciers, rivers and strong winds. Rivers and stream and the like moving pieces of rock is called

transport. [] flowing rivers can transport large rocks, but [] moving rivers can only transport tiny pieces of rock.

fast---slow. As the pieces of rock are carried along by the water, they bash against each

other and the river

bed, thus, they eventually [] []

wear away. They become s[] and more r[].

They become smaller and more rounded.

🗑

Deposition occurs when pieces of weathered

rock sink to the

bottom of either the

river bed or sea forming

sediment. Dead creatures can get trapped in

sediment and form

fossils. It is considered that the time it takes for something to become a fossil is

10,000 years.

🗑

Sediment, such as sand and silt is deposited in

layers. The build up of layers is called

sedimentation. The layers become compacted to form

sedimentary rock. The distinct

layers of

rock are related to the

time intervals at which there is an occurence of

sedimentation.

🗑

The 5 parts of the cycle of which rocks partake are (in consecutive order);

weathering, erosion, transportation, deposition and sedimentation.

🗑

The process of weather and transportation is known as

erosion.

🗑

Sometimes, metamorphic rocks are formed when rocks are close to some

molten magma, and so get

heated. Metamorphic rocks may form from rocks heated by

magma.When a metamorphic rock is formed under pressure, its crystals become arranged in

🗑

Wind, rain and waves can all cause physical weathering. The wind can blow tiny grains of sand against a

rock, that wear the rock

away and [] it

weather. [] and [] can also wear away rock over long periods of time

Rain and waves.

🗑

[] is the movement of the broken pieces away from the site of weathering.

Erosion

🗑

With freeze-thaw weathering, water enters the

gaps inside

rocks, then when the temperature reaches 0° or

less, the water in consecutive order

freezes then expands leading to rock fragments

breaking off.

🗑

What happens to weathered rock? The fast moving water picks up large pieces of

rock, which are

eroded as they are

carried along, then as the river widens out, large pieces of

rock are deposited by the

slow moving water. Most of that rock fragments are deposited at the

mouth of the river where it is both

wide and slow-moving.

🗑

Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.

To hide a column, click on the column name.

To hide the entire table, click on the "Hide All" button.

You may also shuffle the rows of the table by clicking on the "Shuffle" button.

Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Created by: Toluo

Popular Geography sets

Northeast Capitals

"50 States / Capitals"

Semester 1 Vocabulary

Southeast States and Capitals

Midwest States and Capitals

Primary Economic Activities

AICP Certification Case Law and Legal Basis for Planning

"50 States and Capitals"

AICP History Questions

AICP Spatial Areas of Planning Questions

Northeast States and Capitals