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Physical Science

Intro to Angular Velocity

Submitted by PocketLab on Fri, 06/02/2017 - 18:24

Exploration

We have previously learned that velocity is an object’s rate of change in displacement. Velocity is often measured as meters/second. Angular velocity however, measures the rate of change in the displacement of an object as it moves around a central point.

Grade Level

Pressure and Volume with a Syringe

Submitted by PocketLab on Fri, 06/02/2017 - 18:11

Exploration 

Explore air pressure and how it works. In a sealed syringe, as the plunger moves back and forth, the volume of air in the syringe changes. With a large enough syringe, a PocketLab can be placed inside to measure the change in pressure as the the volume changes.

Objective

In this experiment, students will:
1. Determine the relationship between air pressure and volume using a syringe.
2. Explore what is happening to the air molecules when there is a greater or less air pressure.

Grade Level

Ceiling Fan in Winter

Submitted by PocketLab on Fri, 06/02/2017 - 18:08

Exploration

When it is cold outside, it is often thought that fans aren’t needed. However, it may be that a fan can bring warm air near the ceiling down to floor level, increasing comfort without raising the thermostat. Energy could therefore be saved.

Objective

In this experiment, students will:
1) Determine how a ceiling fan affects the temperature in a room, both near the floor and near the ceiling.

Download PDF for complete lab activity

Saving Energy with Curtains

Submitted by PocketLab on Fri, 06/02/2017 - 18:04

Exploration

Does closing blinds or curtains save energy? Often the blinds or curtains in a room are left open when it is cold outside, even when no one is using the room. Would closing them save energy?

Objective

In this experiment, students will:
1. Determine how to use curtains to save energy when it is cold outside.

Download PDF for complete lab activity

What is temperature?

Submitted by PocketLab on Fri, 06/02/2017 - 18:02

Exploration

What does it mean to change temperature? What is temperature? We know what it means to be hot or cold, but what does it mean when you measure the temperature of an item?

Objective

In this experiment, students will:
1. Understand how the temperature of the water is related to the movement (kinetic energy) of the water molecules.
2. Use observations to describe the principle of thermal expansion.

Download PDF for complete lab activity 

Take a hike!

Submitted by PocketLab on Fri, 06/02/2017 - 17:51

Exploration 

As a hiker changes elevation during a hike, the atmospheric pressure will change. The air pressure at sea level, is vastly different than the air pressure at the top of a mountain. In some regions, it can be even be difficult for people who are not from that region to breathe, because they are not used to the changes in altitude. Using PocketLab, determine the relationship between elevation and air pressure.

Objective

Measuring Weight Using PocketLab

Submitted by PocketLab on Fri, 06/02/2017 - 17:28

Exploration

Barometric pressure is the pressure from the force or weight of air exerted on a surface. The PocketLab’s barometric pressure sensor measures the force of the air molecules that push against the sensor.

Objective

In this exploration, students will:
1. Use the barometer to measure the weight of different objects.
2. Observe how pressure (force) inside a plastic bag is affected when weight is added to the plastic bag.

Download PDF for complete lab activity

Grade Level

Use Ratios and Proportions with PocketLab

Submitted by PocketLab on Fri, 06/02/2017 - 16:56

Exploration

Barometric pressure is the pressure from the force or weight of air exerted on a surface. The PocketLab’s barometric pressure sensor measures the force of the air molecules that push against the sensor

Objective

In this investigation students will:
1. Design a system that uses PocketLab’s barometer and an understanding of ratios and proportions to build a scale.
2. Use the given supplies to find the weight of unknown objects.

Download PDF for complete lab activity

Grade Level

Measuring Pressure Change from Chemical Reaction

Submitted by PocketLab on Fri, 06/02/2017 - 16:49

Exploration

After a change occurs, if the molecules of the chemicals involved do not change, it is only a physical change. Ice melting to water is an example of this. A change has occurred, but the H2 0 as ice, remains H2 0 as water. If however the molecules of the chemicals involved do change to form new chemicals, then a chemical change has occurred.

Grade Level

Pressure and Volume with a Syringe and Flask

Submitted by PocketLab on Fri, 06/02/2017 - 16:44

Exploration

Explore air pressure, temperature, and volume and how they work together. In a syringe sealed to an Erlenmeyer flask , when the syringe’s plunger moves back and forth, the volume of air in the syringe and f ask changes. Will the pressure also change if the temperature of the air sealed in the syringe and f ask changes? A PocketLab can be placed inside the Erlenmeyer f ask to measure the change in pressure as the the volume and temperature change. 

Objective

Grade Level