1. Upthrust and Gravity

2. Upthrust and Gravity Gravity is the pull of the earth on something
Upthrust is the push upwards of a liquid on something.

3. Liquid
Weight in Air (N)
Weight in Liquid (N)

4. Practical
Measure the weight of an object in the air using a Newton meter. Write down the weight in the table.
Now put the object into the water and measure its weight. Write down the weight in the table.

5. Objects weigh less in water because the water pushes the object upwards. This force is called ______________
When __________ and ___________ are equal, the object will FLOAT.
UPTHRUST
UPTHRUST
GRAVITY

6. When gravity is bigger than upthrust, the object will _____
If upthrust is bigger than gravity, the object will move upwards, out of the water.
SINK