🏔️1A mountain, valley, and plain are all examples of what?
🏔️ Mountains, valleys, and plains are all landforms! A landform is a natural shape on Earth's surface. Mountains are tall and peaked, valleys are low between mountains, and plains are wide and flat.
🏝️2What is a piece of land completely surrounded by water called?
🏝️ Land completely surrounded by water is called an island! Hawaii is a famous island. A peninsula is similar but still connected to larger land on one side. The key difference: island = surrounded on ALL sides, peninsula = surrounded on most sides.
🪨3When you shake soil with water in a jar, which material sinks to the BOTTOM first?
🪨 Heavy gravel and sand sink to the bottom first because they are heaviest! Then fine sand settles, then silt, and the lightest organic matter (leaf bits) floats on top. This shows us the layers that make up soil!
💧4What is it called when water moves soil and rock from one place to another?
💧 When water moves soil and rock from one place to another, that is called erosion! The Grand Canyon was formed by erosion over millions of years. When eroded material is dropped in a new place, that is called deposition.
🗺️5What does a compass rose on a map show you?
🧭 A compass rose shows the four cardinal directions: North, South, East, and West! The legend (or key) tells you what symbols mean. Maps always include a compass rose so you know which direction is which.
🌦️6What is the difference between weather and climate?
🌦️ Weather is what is happening outside today (sunny, rainy, windy). Climate is the pattern of weather over a long time, like 30+ years. Example: "It is snowing today" is weather. "Colorado has cold, snowy winters" is climate!
🔬7In the erosion experiment, what happened when you poured water over the sand hill?
💧 Water moved the sand downhill! This is erosion in action. Water flows toward the lowest point and carries loose material with it. The sand piled up at the bottom of the pan, just like sediment deposits at the mouth of a real river.
🏗️8In the engineering challenge, what worked BEST to slow erosion?
🏗️ Heavy rocks (or a combination of rocks, sticks, and leaves) worked best! Rocks are heavy so they do not wash away. In real life, engineers use riprap (large rocks), retaining walls, and planted vegetation together to control erosion most effectively.
📋9What is a map LEGEND (also called a key) used for?
🗺️ A legend (key) explains what the symbols on the map mean! For example: a blue line means a river, a triangle means a mountain, a small square means a building. Without the legend, you would not know what the symbols stood for.
🌍10Which of these is an example of something that SLOWLY changes Earth's surface over millions of years?
🌍 Water erosion carving a canyon is a very slow process that takes millions of years! The Grand Canyon took about 5-6 million years to form. Thunderstorms and floods are fast events. Earthquakes are sudden. Erosion is one of Earth's slowest, most powerful shapers.
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