What are Rocks?
What is a rock?
a hard non-living object from the ground. Made up of minerals!
What is soil made of?
rocks and once-living things
Which soil type is sticky when wet?
Clay
Which type of rock is larger?
A.) Pebble
B.) Boulder
c.) Sand
B.) Boulder
Which does NOT hold water well?
A.) Clay
B.) Humus
C.) Sand
Tina and Juan want to compare observations about how a type of soil looks. Tina uses a hand lens to observe the soil. Which tool should Juan use to observe the soil?
A hand lens
What is weathering?
A change that breaks a rock into smaller pieces.
How are soils the same?
They are made up of rocks and once-living things
You claim that Soil A is better for growing plants than Soil B. Your evidence is that plants in Soil A grow taller than the ones in Soil B. Why does your evidence support your claim?
The plant in better soil grew more.
What do we use rocks for?
Many different ways.
Sample Answer: To make buildings
Why is soil important?
Used to grow plants
You study a sample of soil. What is the best way to record your observations?
A.) Draw a picture of the soil
B.) Talk about where you got the soil
C.) Think about the soil
A. Draw a picture of the soil.
How can rocks be different?
In size, shape, and color.
Why is weathering important in soil?
Weathering breaks down rocks into bits to make soil
Which soil type best supports plant growth?
Humus