Unit 3D: Rocks and Soils

Unit 3D: Rocks and Soils

Unit 3D: Rocks and Soils

Unit 3D: Rocks and Soils

Rocks and Soils

Unit 3D: Rocks and Soils

Unit 3D: Rocks and Soils

Some useful words

Slate –

Marble –

Chalk –

Granite –

Sand –

Clay –

Texture – how the surface of a rock would feel

Absorbent – a rock that will soak up water

The names of different rocks

Unit 3D: Uses of Rocks: L.O. 1: N.C.

Unit 3D: Uses of Rocks

Uses of Rocks

Unit 3D: Grouping Rocks: L.O. 2, 3: N.C.

Unit 3D: Grouping Rocks

Grouping Rocks

For each of the rocks available make as many observations as you can. Record the details in a table

Rock typeSize of

particlesShape of particles

Colours on the rock

Texture of the rock

Unit 3D: Testing Rocks: L.O. 4: N.C.

Unit 3D: Testing Rocks

Testing Rocks

We can test rocks to compare them

1) Rubbing test – we can rub 2 rocks together to see how easily they are worn away.

Take 2 rocks of the same type and rub them together. Collect and examine any particles that are formed.

Rank your rocks in order of ease of wearing away.

Which rock is the hardest?

2) Permeability – absorption test. Drop small amounts of water onto each rock to see if any is soaked up.

You will only need very small amounts of water, note how quickly the water is soaked up by each rock.

Unit 3D: Different Rocks different uses: L.O. 5: N.C.

Unit 3D: Different Rocks different uses

Different Rocks different uses

Granite Marble Slate

doesn’t wear away is attractive weather-proof

Unit 3D: Where are all the rocks? L.O. 6: N.C.

Unit 3D: Where are all the rocks?

Where are all the rocks?

Unit 3D: Observing Soils: L.O. 8, 9: N.C.

Unit 3D: Observing Soils

Observing Soils

Use the equipment provided to separate the soil particles, write down any observations you can about each soil sample

Soil typeSize of

particlesShape of particles

Colours on the rock

Texture of the rock

Unit 3D: Water flowing through soil: L.O. 10, 11, 12, 13, 14: N.C.

Unit 3D: Water flowing through soil

Water flowing through soil

Why do puddles stay in some places longer than others?

Unit 3D: Different Rocks, different soil: L.O. 7: N.C.

Unit 3D: Different Rocks, different soil

Different Rocks, different soil

Chalk Clay

Unit 3D: Water flowing through soil: L.O. 10, 11, 12, 13, 14: N.C.

Unit 3D: Water flowing through soil

…cont

You are to investigate the relationship between type of soil and how easily water flows through the soil.

What will you measure?

How much water will you use?

How will you keep the test fair?

Record your results and put the soils in order

Unit 3D: Rocks and Soils: Summary

Unit 3D: Summary

Rocks and soils

Roc

ks

Varie

ty o

f use

s

Building

Etc.

Particles

Colour

Texture

Soil

Group according

to characteristics

Depend on rock

Sieved

Water flows easily through some soils

Test

Rub

Absorbency

(permeability)

Chos

en fo

r

char

acte

ristic

s

Mar

ble

for

stat

ues

Looks good

Slate for roofsNot permeable

Granite for stepsHard