If you need to access any worksheets( in pdf format) you may use the resources below each chapter:

Chapter 1 : The Nature of Science

Chapter 4: Atmosphere

Chapter 5: Weather

Chapter 6: Climate

Chapter 8: Life's Structure and Classification

Chapter 9: Cell Processes

Chapter 18: Interactions of Living Things

Chapter 19: Conserving Resources

Chapter 20: Properties and Changes of Matter

Chapter 21: Substnaces, Mixtures, and Solubility

Chapter 24: Energy and Energy Resources