### There are 11 results

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Applications > STEM - physical world

##### Age 7 to 16 Challenge Level:

Design and test a paper helicopter. What is the best design?

##### Age 7 to 14 Challenge Level:

Investigate how avalanches occur and how they can be controlled

##### Age 7 to 16 Challenge Level:

Making a scale model of the solar system

##### Age 7 to 14 Challenge Level:

Many natural systems appear to be in equilibrium until suddenly a critical point is reached, setting up a mudslide or an avalanche or an earthquake. In this project, students will use a simple. . . .

##### Age 11 to 14 Challenge Level:

This problem offers you two ways to test reactions - use them to
investigate your ideas about speeds of reaction.

##### Age 7 to 14 Challenge Level:

How does the time of dawn and dusk vary? What about the Moon, how does that change from night to night? Is the Sun always the same? Gather data to help you explore these questions.

##### Age 11 to 14 Challenge Level:

Examine these estimates. Do they sound about right?

##### Age 11 to 14 Challenge Level:

Water freezes at 0°Celsius (32°Fahrenheit) and boils at 100°C (212°Fahrenheit). Is there a temperature at which Celsius and Fahrenheit readings are the same?

##### Age 7 to 14 Challenge Level:

The image in this problem is part of a piece of equipment found in the playground of a school. How would you describe it to someone over the phone?

##### Age 11 to 14 Challenge Level:

Make your own pinhole camera for safe observation of the sun, and find out how it works.

##### Age 11 to 16 Challenge Level:

PhysNRICH is the area of the StemNRICH site devoted to the mathematics underlying the study of physics