Waves, Currents and Tides
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Water makes up more than half of our body weight and is essential for life. Our bodies need water to regulate temperature and remove waste. Water is also necessary for plants, animals, and ecosystems to survive.
Why is Water Important?
Question: How is freshwater different from salt water? Clues: • Freshwater has less salt and other dissolved solids. • Salt water has a higher density than freshwater. • Salt water has a higher boiling point than freshwater. In pairs: Select and solve one of the tasks: A. Draw a Vinn diagram comparing and contrasting freshwater and salt water. B. Create a poster to explain the differences between freshwater and salt water.
"Identify the characteristics and components of waves, currents, and tides, and explain how they affect Earth's systems and processes."
Ocean currents are large, ongoing movements of water in the ocean. These currents are caused by forces like wind, temperature, and the salinity of the water. Ocean currents transport energy, heat, and nutrients around the planet.
What are Ocean Currents?
What is a one-word answer for a body of water that moves in a regular pattern?
Waves are created by wind moving over the surface of the ocean, which causes the water to move in a circular motion. Currents are horizontal movements of seawater caused by differences in density, temperature, and salinity. Tides are the rise and fall of the sea level caused by the gravitational pull of the moon and sun.
The Difference Between Waves, Currents and Tides
Waves: A wave is a disturbance that travels through space and matter, transferring energy from one place to another. Currents: Currents are the horizontal movement of water in the ocean, caused by the wind, temperature, and salinity gradients. Tides: Tides are the rise and fall of sea level caused by the gravitational pull of the Moon and the Sun on the oceans.
Tides are the periodic rise and fall of sea level caused by the gravitational pull of the moon and the sun. Waves are generated by wind, while currents are generated by the tides. Tides can be predicted up to seven days in advance using the moon's orbital period.
Did you know?
Work together in pairs: What are the differences between waves, currents, and tides in terms of how they affect Earth's systems and processes?
Work together in pairs: Q: What is the main difference between waves, currents, and tides?
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Which of the following is caused by the gravitational pull of the moon and sun?
What mainly causes waves?
Which of the following is defined as the flow of water in a certain direction over a long period?
What are waves characterized by?
- Amplitude, frequency, wavelength and speed.
- Depth, temperature and salinity.
- Location and duration.
Which one below can be described as 'the horizontal movement of seawater'?
What are the two main factors that cause the rise and fall of tides?
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