Show:
Rocks
Rocks 2
Soil
Soil 2
challenge
100
Earth is made up of __________?
What is rock
100
Rocks are made of ___________.
What is minerals
100
How can people use soil?
What is to grow plants
100
What kind of soil is sticky when it's wet?
What is clay
100

This type of soil has the most tightly packed particles.

What is clay

200
A rock is a hard, __________ object from the ground.
what is nonliving
200
Name the smallest rock.
what is sand
200

Soil forms when rocks break down and mix with dead plants and ________.

What is animals
200
What kind of soil can't hold water well?
What is sand
200

This type of soil has the least tightly packed particles.

What is sand.

300
This is what happens when wind and water break down rock into smaller pieces. What is this process called?
What is weathering
300
What tool would you use to observe small rocks?
what is a hand lens
300

Scientists observe soil to determine what plants will grow in an area. What do scientists mean when they talk about the texture of soil?

What is how soil feels
300

A scientist measures how tall a certain type of plant grows in three different types of soil. What question is the scientist trying to answer? 

what is what type of soil is best for this kind of plant? 

300

The process by which yard and food waste break down into organic matter for your garden.

What is composting.

400
Name at least three properties that rocks can be sorted into.
What is size, shape, color, texture, type, etc...
400
What forces rocks to break down through weathering?
what is wind and water
400

James lives near the beach and his soil has a lot of sand in it. What was most likely the color of the soil?

What is light brown, tan, etc...
400
Many plants do not grow well in what kinds of soil?
What is clay and sand
400

The name for a person who studies rocks.

What is a geologist

500
True or false? A boulder is a tiny rock.
What is false
500
put these rocks in order from smallest to biggest


boulder, sand, pebble

what is sand, pebble, and boulder
500

Maya wants to grow some bean seeds in a flowerpot. Which soil should Maya put in the pot? 

clay, sand, rock, or humus?

What is humus
500

Name the 3 types of soil

what is clay, silt, and sand

500

True or false?  A jagged rock is smooth and rounded.

What is false