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Why dont water striders sink?
Water striders can float on the surface of the water due to their low weight and the surface tension of the water. Their long, hydrophobic legs help them to spread their weight and distribute it, allowing them to stay on the water's surface without sinking.
How do water striders walk on water?
Water striders use their long legs and low body weight to distribute their weight over a large surface area, allowing them to effectively "skate" on the water's surface tension. This surface tension is created by the cohesive forces between water molecules, which are strong enough to support the water strider's weight without breaking. Their specialized hydrophobic legs also help repel water, preventing them from sinking.
Why surface approches to learning in bad?
Surface approaches to learning can be seen as less effective because they prioritize memorization and rote learning over deep comprehension and critical thinking. Students using surface approaches may struggle to make connections between concepts and apply knowledge in different contexts. This approach may lead to surface-level understanding that is quickly forgotten rather than building a strong foundation for long-term retention and application.
What are the adaptations for water strider?
Water striders have adaptations such as hydrophobic hairs on their legs that trap air, allowing them to float on water's surface tension. Their long legs help distribute their weight and prevent them from breaking the water's surface. Additionally, their bodies are streamlined and lightweight, enabling them to glide effortlessly on the water's surface and capture prey.
A larger surface area makes diffusion happen more quickly?
Yes, a larger surface area allows for more contact between the molecules involved in diffusion and the surrounding environment, facilitating a faster exchange of molecules. This is because more molecules can be in contact with the surface at the same time, increasing the rate of diffusion.
