Matter!

Matter is anything that takes up space and has a mass. Yesterday we were measuring mass and volume by using a scale and some graduated cylinders. Luckily, the things we measured had a mass that was measurable without any complicated instruments, but I've always wondered how scientists measure the mass of large objects... like whales. Or maybe small, miniscule things like atoms and dust mites (which we all know exist). What about volume? How do you measure the amount of water or mass in the ocean? Maybe we'll learn about it later in our unit.

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