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Pebbles, Sand, and Silt

 
Student Rock Center Activities and More

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What do you call a scientist that studies rocks?
A scientist that studies rocks is called a geologist.


What do you call a scientist that studies volcanoes?
A scientist that studies volcanoes is called a Volcanologist.

Rocks are the solid material of the Earth's crust.




Investigation 1: First Rocks

NJ Science Standards for Investigation 1

5.2.2.A.1 Sort and describe objects based on the materials of which they are made and their physical properties.

5.2.2.A.2 Identify common objects as solids, liquids, or gases.

5.4.2.C.1 Describe Earth materials using appropriate terms, such as hard, soft, dry, wet, heavy, and light.


Three types of Volcanic (Igneous) Rocks
  • Basalt - hardest of the three volcanic rocks
  • Scoria - harder than tuff but softer than basalt
  • Tuff - softest of the three volcanic rocks

  • Igneous Rocks

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In this Investigation we will sort the volcanic rocks by its' properties, using our eyes.

Size
Color
Shape
Texture




Investigation 2: River Rocks

NJ Science Standards for Investigation 2

5.2.2.A.1 Sort and describe objects based on the materials of which they are made and their physical properties.

5.2.2.A.2 Identify common objects as solids, liquids, or gases.

5.4.2.C.1 Describe Earth materials using appropriate terms, such as hard, soft, dry, wet, heavy, and light.


Five types of river rocks - from largest to smallest
  1. Large Pebbles
  2. Small Pebbles
  3. Large Gravel
  4. Small Gravel
  5. Sand

Peep and the Big Wide World - Quack and the Very Big Rock - Video



In this Investigation we will sort the river rocks by using a tool called: mesh screens

Large Mesh Screens
 Medium Mesh Screens
 Small Mesh Screens


In this Investigation we will also sort  smaller rocks (sand and silt) by using: water




Investigation 3: Using Rocks

NJ Science Standards for Investigation 3

5.4.2.G.4 Identify the natural resources used in the process of making various manufactured products.

In this Investigation we will learn about Earth's Materials.

What are Earth's Materials?

Earth's Materials are:

Rocks
Minerals
Soils
Water
Metals
Precious Rocks


Earth's Materials

Find Earth Materials - Game


People use rocks to make many things like:

buildings or houses

brick walls

roads

sidewalks

statues

fireplaces




Investigation 4: Soil Explorations

NJ Science Standards for Investigation 4

5.4.2.C.1 Describe Earth materials using appropriate terms, such as hard, soft, dry, wet, heavy, and light.

5.4.4.C.1 Create a model to represent how soil is formed.



There are four things that are mixed together to make up soil.
  1. sand
  2. gravel
  3. humus
  4. pebbles
Worms are also very good for soil.
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