Do now! He’s going to blow! Be careful Good Neutral Excellent MOODOMETER Can you look through your exams?

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Presentation transcript:

Do now! He’s going to blow! Be careful Good Neutral Excellent MOODOMETER Can you look through your exams?

Exams

Last lesson Upthrust Measuring upthrust Density

Upthrust Gently lower a mass on a Newton meter into a beaker of water. Sketch a diagram in your book and write a sentence describing what happens.

What happens if the upthrust is equal to the force of gravity?

Which is heavier? 5 kg

Density Density is the mass of one cubic centimetre of a substance. So for example, gold has a density of 19.3 g/cm 3. This means one cubic centimetre (cm 3 ) of gold has a mass of 19.3 grams.

Density = mass volume Or using the formula triangle; m D x V g/cm 3 g cm 3 The formula!

Density of regular shapes volume = length x width x height density = mass/volume mass using a scale length width height

Today’s lesson Measuring density (continued) Floating and sinking Density of water

Can you continue to measure your densities?

Which will float?

Measuring the density of water

Density of water Mass of water and cylinder Mass of cylinder Mass of water Density = mass/volume Volume

Can you write a sentence about what we have discovered?