soil science quiz Grade 3

📚 Quick Study Guide

• 🌍 Soil is made of tiny pieces of rock, minerals, air, water, and humus (dead plant and animal stuff!).
• 🌱 Soil is essential for plant growth because it provides nutrients, water, and support for roots.
• 🌧️ Different types of soil hold water differently. Sandy soil drains quickly, while clay soil holds more water.
• 🐛 Humus is important because it adds nutrients to the soil and helps it hold water.
• 🌾 Farmers use different methods to improve the quality of their soil, like adding compost or fertilizer.
• 🔬 Soil is home to many living things, like worms, insects, and bacteria, which help keep the soil healthy.
• 🥕 Healthy soil leads to healthy plants, which provide us with food!

🧪 Practice Quiz

1. What is soil mainly made of?
   1. Air only
   2. Tiny pieces of rock, minerals, air, water and humus
   3. Water only
   4. Large rocks
2. Why is soil important for plants?
   1. It provides a place to grow
   2. It provides nutrients
   3. It gives support for the roots
   4. All of the above
3. Which type of soil drains water the fastest?
   1. Clay soil
   2. Silty soil
   3. Sandy soil
   4. Loamy soil
4. What is humus?
   1. Living animals
   2. Dead plant and animal matter
   3. Rocks
   4. Water
5. What do farmers add to soil to improve its quality?
   1. Rocks
   2. Compost or fertilizer
   3. Water
   4. Air
6. What lives in the soil that helps keep it healthy?
   1. Worms
   2. Insects
   3. Bacteria
   4. All of the above
7. Healthy soil leads to...
   1. Healthy plants
   2. Unhealthy plants
   3. No plants
   4. Rocks