Bulasa NHS Science 10

27/08/2025

The electromagnetic spectrum is a classification of electromagnetic radiation based on frequency or wavelength.

Electromagnetic waves are the physical phenomena that make up the electromagnetic spectrum.

Think of it this way: The electromagnetic spectrum is like a rainbow showing all the colors of light. Each color represents a different type of electromagnetic wave. Electromagnetic waves are the actual light that makes up the rainbow.

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14/08/2025

11/08/2025

Q1M5. Enumerate the lines of evidence that support plate movement.

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23/07/2025

Q1 M3: Processes that Occur Along Plate Boundaries

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02/07/2025

Plate Boundaries

Grade 10 Science: First QuarterLesson 1-Part 1: Plate Tectonics / Divergent, Convergent & Transform Plate BoundariesLink to part 1https://youtu.be/pP45BWQ4jus

25/06/2025

The epicenter is the point on the Earth's surface directly above the focus (or hypocenter) of an earthquake. The focus is the point inside the Earth where the earthquake rupture originates. So, the epicenter marks the location on the surface where the earthquake's effects are typically most strongly felt.

24/06/2025

Kinds of Crust and Map of Plate Boundaries

23/06/2025

Plate tectonics is the scientific theory that explains the large-scale motion of Earth's lithosphere. Think of the Earth's outer shell as being broken into several large and small pieces called tectonic plates. These plates are not stationary; they're constantly moving, albeit very slowly – at a rate of a few centimeters per year. This movement is driven by convection currents in the Earth's mantle (the layer beneath the crust).

The interactions at the boundaries where these plates meet are responsible for most of Earth's major geological features and events, including:

- Earthquakes: Occur when plates grind past each other, collide, or pull apart.
- Volcanoes: Form when molten rock (magma) rises to the surface, often at the boundaries of converging plates.
- Mountain ranges: Created through the collision of tectonic plates, forcing rock layers upwards.
- Ocean basins: Form where plates diverge (move apart), allowing magma to rise and create new crust.
- Rift valleys: Long, narrow depressions that form along divergent plate boundaries.

In essence, plate tectonics is the unifying theory that explains the dynamic nature of Earth's surface, its ever-changing landscape, and the frequent occurrences of earthquakes and volcanic eruptions. It's like a giant, slow-motion puzzle with enormous pieces constantly shifting and interacting.

19/06/2025

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