By Liz Lee Heinecke

At-home technology presents an atmosphere for freedom, creativity and invention that's not continuously attainable in a college environment. on your personal kitchen, it really is uncomplicated, reasonably cheap, and enjoyable to whip up a couple of extraordinary technological know-how experiments utilizing daily constituents. technological know-how could be as effortless as baking. Hands-On relations: Kitchen technological know-how Lab for Kids bargains fifty two enjoyable technology actions for households to do jointly. The experiments can be utilized as person tasks, for events, or as academic actions teams. Kitchen technology Lab for Kids will tempt households to cook dinner up a few physics, chemistry and biology of their personal kitchens and again yards. the various experiments are secure sufficient for children and intriguing sufficient for older little ones, so households can detect the enjoyment of technology together.

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1) Fig. 1: Trace your hand with a pencil. STEP 2: On the other piece of paper, scribble hard with the pencil until a small area is covered with the graphite from the pencil lead. Rub your pinkie around in the graphite until it is covered with gray. Carefully place your graphite-covered pinkie finger on the sticky side of a piece of transparent tape and gently lift your finger off the tape. A clear fingerprint should be visible. (Fig. 2) Fig. 2: Transfer your graphite fingerprint to clear tape. STEP 3: Place the tape facedown on the pinkie finger of the hand you traced.

The more sugar you add to a 1/2 cup (120 ml) of water, the more atoms the water will contain and the denser the solution will be. Less dense liquids sit on top of denser liquids, which is why water containing only 2 tablespoons (26 g) of sugar floats on the layers that contain more sugar molecules. Scientists sometimes use density gradients to isolate different parts of cells by breaking up the cells, putting them on top of a density gradient in a tube and spinning the tube very fast in a centrifuge.

MATERIALS 2 sheets of white paper Transparent tape, such as Scotch Tape Pencil Magnifying glass Clear glass or jar Unsweetened cocoa powder A paintbrush or makeup brush SAFETY TIPS & HINTS Be very gentle when dusting prints so you don’t smear the image. PROTOCOL STEP 1: On one sheet of paper, trace your left hand with a pencil. If you’re left-handed, trace your right hand. (Fig. 1) Fig. 1: Trace your hand with a pencil. STEP 2: On the other piece of paper, scribble hard with the pencil until a small area is covered with the graphite from the pencil lead.

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