Year 5 Science extension task featuring the Ares-V Martian Descent scenario and Martian Physics Table to challenge high achievers through complex fluid resistance analysis.
A high-challenge extension task for high-achieving students, focusing on depth, synthesis, and professional-level scenarios rather than additional volume.
Subject: Science | Year: 5
Name: _________________________ Class/Set: ____________ Date: _________
TEACHER GUIDE: Facilitation & Support
High-ability learners in the top 10% often master the concept of 'gravity' as a static downward pull very quickly. To prevent cognitive stagnation, this task introduces the concept of Fluid Resistance and Terminal Velocity (Year 7/8 concepts) through the lens of a multi-variable optimisation problem. This moves the student from simple observation to systemic analysis, requiring them to balance mass against surface area to achieve a specific outcome in a simulated low-density environment.
How to guide the student:
You are the Lead Aeronautical Engineer for the Ares-V Colony on Mars. A critical shipment of medical supplies and heavy machinery is currently in orbit. Because the Martian atmosphere is 100 times thinner than Earth’s, your "Drop-Pods" are at risk of smashing into the surface. You must design a parachute system that ensures both the 'Light Medical Kit' and the 'Heavy Drill' land at the exact same velocity (speed) to ensure the recovery team can reach them at a single landing site.
Task: "The Descent Optimisation Investigation"
You are provided with two Supply Pods with different masses. Your goal is to determine the required parachute surface area for the Heavy Pod so that it falls at the same rate as the Light Pod.
The Data Constraints:
Instructions:
Success Criteria:
| Payload Item | Mass (g) | Surface Area (cm²) | Ratio (cm²/g) | Predicted Speed |
|---|---|---|---|---|
| Light Medical Kit | 200g | 400cm² | Constant (Target) | |
| Heavy Power Drill | 800g | Constant (Target) | ||
| Emergency Rover | 2,000g | Constant (Target) |
In a vacuum, everything falls at the same rate. On Mars, we have a little bit of air. To keep the speed the same, the 'Upward Push' (Air Resistance) must balance the 'Downward Pull' (Weight). If you have 4 times the mass pulling down, you generally need 4 times the resistance pushing up. Start by checking if your cm²/g ratio remains the same for all payloads.
⚠ TEACHER’S GUIDANCE
The Solution:
Cognitive Pathway Analysis:
Background & Theoretical Synthesis:
Diagnostic Quiz (Check for Mastery):
1) Which force is responsible for pulling the Ares-V Pods towards the Martian surface?
Answer 1: c) ☐ Gravity.
2) If an engineer increases the Surface Area of a parachute, what happens to the Air Resistance?
Answer 2: b) ☐ It increases (more air molecules hitting the fabric).
Eliminating cognitive plateauing in high-attaining pupils requires moving beyond repetitive mass calculations toward systemic variable manipulation. By introducing the Descent Optimisation Investigation, learners must reconcile disparate data points to determine how surface area compensates for increased mass in low-density atmospheres. This structural shift from static observation to dynamic modelling reduces the risk of shallow engagement by forcing pupils to synthesise fluid resistance and terminal velocity concepts. Such abstract reasoning facilitates a sophisticated schema for Year 5 pupils, bridging the gap between basic gravitational understanding and the complex mechanics of aerodynamic equilibrium.
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