Search Results
Showing results 21 to 40 of 574
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-484.jpg?itok=sCXhvHtG)
The Power of Words
Source Institutions
This simple, yet surprising physics demonstration challenges preconceptions about forces, and demonstrates the strength of atmospheric pressure.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-626.jpg?itok=IbatR_md)
Separation Anxiety
Source Institutions
In this activity, learners discover the primary physical properties used to separate pure substances from mixtures.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-039.jpg?itok=K7pcJq_8)
Hull Engineering
Source Institutions
In this activity, learners explore how the hull shape impacts a ship's performance and stability.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-253.png?itok=HUS1L8US)
Charge Challenge
Source Institutions
In this activity, learners explore how objects can have positive, negative, or neutral charges, which attract, repel and move between objects.
Currently Working: Testing Conductivity
Source Institutions
Visitors test solutions of water, sugar, salt, and hydrochloric acid and the solids salt and sugar. They clip leads from the hand generator to wires immersed in each substance.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-849.jpg?itok=iTolLPQh)
Making a One-Second Timer
Source Institutions
This lab activity has learners create a pendulum with a one-second period.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-135.jpg?itok=Pi9Vlw1t)
Salt 'n Lighter
Source Institutions
In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-784.jpg?itok=2bMlsgzn)
Free-Fall Bottles & Tubes
Source Institutions
In this physics activity, learners conduct two experiments to explore free-falling.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-454.jpg?itok=Zqn0Ji4X)
Drying It Out
Source Institutions
In this activity, learners investigate and compare the rate of drying in different conditions.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-647.png?itok=1bbf9lZ8)
Separating with Chromatography
Source Institutions
In this experiment, learners separate different types of molecules in marker inks (using a technique called "thin layer chromatography").
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-306.png?itok=m8djA0pV)
Chromatography
Source Institutions
In this activity, explore chromatography and the various colors that make up the ink in markers. Use this activity to investigate cohesion and adhesion.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-332.jpg?itok=pYNKIPOI)
Comparing the Density of an Object to the Density of Water
Source Institutions
Learners compare the weight of equal volumes of wax, water, and clay. Learners discover that since the wax weighs less than an equal volume of water, it is less dense than water and will float.
Investigating Density Currents
Source Institutions
In this lab activity, learners explore how to initiate a density current. Learners measure six flasks with different concentrations of salt and water (colored blue).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-848.jpg?itok=vgq6upYr)
Bicycle-Wheel Gyro
Source Institutions
In this activity, a spinning bicycle wheel resists efforts to tilt it and point the axle in a new direction.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-800.gif?itok=zi-A4d98)
Electroplating
Source Institutions
In this electrochemistry activity, learners will explore two examples of electroplating.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-814.gif?itok=IicGc_8l)
Incredible Shrinking Shapes
Source Institutions
In this activity, learners get hands-on experience with ratios and scaling while making their own jewelry out of recycled plastic containers.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-069.jpg?itok=IPYhDCRy)
Watching Crystals Grow
Source Institutions
Learners will compare the growth rate and appearance of crystals forming on small rocks to those growing on miscellaneous objects. Learners will also investigate how temperature (warm vs.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-252.png?itok=eHHR4Mai)
Magnet Mania
Source Institutions
In this activity, learners explore the relationship between electric charges and magnetic fields.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-531.jpg?itok=uIjuRcRp)
Surface Tension Icebreaker
Source Institutions
This is a quick activity (located on page 2 of the PDF under Nasturtium Leaves Activity) about surface tension.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-861.gif?itok=umup6nux)
Modeling Limits to Cell Size
Source Institutions
This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell.