BLE Science covers foundational concepts across Physics, Chemistry, Biology, and Astronomy.
1. Simple Machines: Mechanical Advantage and Efficiency
Formulas for Mechanical Advantage ($MA = \frac{L}{E}$), Velocity Ratio ($VR = \frac{d_E}{d_L}$), and Efficiency ($\eta = \frac{MA}{VR} \times 100\%$). Explain why practical machines never achieve 100% efficiency due to friction and self-weight.
2. Plant Cell vs Animal Cell Diagrams
Know the three exclusive plant cell features: rigid cellulose cell wall, large central vacuole, and plastids (chloroplasts).
