Water Properties Lab

What is the main objective of the Penny Lab?

• To measure the diameter of a penny

• To observe surface tension in action

• To determine how many water droplets a penny can hold

• • To compare different types of coins

Which material is essential for conducting the Penny Lab?

• • A ruler

• A dropper

• A thermometer

• A beaker

What does surface tension refer to in the Penny Lab?

• The force that allows water droplets to pile up on a penny

• The weight of the penny in water

• The thickness of the water droplet

• The interaction between water and metal

Which of the following is a critical observation to record during the experiment?

• The color of the water

• The shape of the penny

• The number of water droplets the penny holds

• The time of day the experiment is conducted

How can you ensure consistency in droplet counting?

• Use the same equipments each time

• Vary the height from which the droplets are dropped

• Count quickly to avoid evaporation

• Use a different coin each time

What should be done after completing the Penny Lab?

• Properly clean up and dispose of materials

• Leave the materials out for future use

• Throw away the penny

• tore the water in a sealed container

What is a potential source of error in the experiment?

• Using distilled water

• Dropping water from inconsistent heights

• Using a new penny

• Conducting the experiment outdoors

How could you modify the experiment to test different variables?

• Use different coins or liquids

• Change the color of the penny

• Perform the experiment on a slanted surface

Which scientific principle is demonstrated by the Penny Lab?

• Gravity

• Buoyancy

• Surface tension

• Friction

Why is it important to repeat the experiment multiple times?

• To ensure reliable and consistent results

• To practice droplet counting

• o increase the number of observations

• To use more materials