![salt water density salt water density](https://i.pinimg.com/originals/49/87/69/498769dcaf9b10595e3dcb1e69815c6a.png)
This makes the water denser and allows more objects to float on the surface that would sink in fresh water.Ībout 3.5 percent of the weight of seawater comes from the dissolved salts. As the salt dissolves in the water, it adds mass (more weight to the water). HOW DOES SALT CHANGE THE DENSITY OF WATER?Īdding salt to water makes the water denser.
![salt water density salt water density](https://i1.rgstatic.net/publication/238458095_The_density_of_seawater_as_a_function_of_salinity_5_to_70_g_kg_-1_and_temperature_27315_to_36315_K/links/0c96052cae2b3c45a7000000/largepreview.png)
![salt water density salt water density](http://www.kf.elf.stuba.sk/~ballo/water/water_physics_subory/physsal.gif)
You can learn more about density and buoyancy from our Lego boat lesson. Ask the kids what they think will happen this time and demonstrate!ĭensity refers to how heavy something is relative to the space it takes up.In the other glass, fill to the same height with water.Ask the kids what will happen if you carefully drop an egg into the glass of water.Start by filling one glass about 2/3 of the way full with water.Two tall glasses (big enough to fit an egg).SEP.3.F Make predictions based on prior experiences.SEP.1.B Ask and/or identify questions that can be answered by an investigation.SEP.3.D Make predictions about what would happen if a variable changes.SEP.3.E Test two different models of the same proposed object, tool, or process to determine which better meets criteria for success.SEP.3 Planning and Carrying Out Investigations.Examples of Earth’s surface could include sand, soil, rocks, and water. Assessment of temperature is limited to relative measures such as warmer/cooler. K-PS3-1 Make observations to determine the effect of sunlight on Earth’s surface.Share to Google Classroom Education Standards Expanding on the normal sink and float experiment, students will learn about how salt changes the density of water.