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**Earth and space science**

**Mathematics**

Now showing results **201-210** of **245**

In this activity, students build a model of an active galaxy. From this, they will learn about the geometry of the components of an active galaxy and develop an understanding that different viewing angles can lead to dramatically different... (View More) interpretations of a galaxy's appearance. The activity includes background information, glossary, essential questions, extension activities, transfer activities, adaptations for visually-impaired students, and an answer key. Additional materials needed to do this activity include a compass. This is activity one of three in the Active Galaxies education unit. (View Less)

This activity focuses on the question, What do active galaxies look like when viewed from different distances? Students work in small groups to learn about the small angle formula, construct a template, and use it to correctly measure the angular... (View More) size of a person. Students then use the Active Galaxies Poster to measure the angular size of a galaxy. Materials are commonly available or inexpensive items, e.g., scissors, cardboard, construction paper, calculator, protractor, meter stick or measuring tape). Includes background information, glossary, essential questions, extension activities, transfer activities, adaptations for visually-impaired students, and an answer key. This is activity 2 of 3 in the Active Galaxies Educators Guide. (View Less)

This is an activity about the detection of magnetic storms. Learners will plot the locations of magnetic observatories in Canada and analyze the magnetic intensity for each station, looking for the difference between stable magnetic activity and the... (View More) largest difference in change in magnetic activity and identifying any patterns of change. This is the thirteenth activity in the Exploring the Earth's Magnetic Field: An IMAGE Satellite Guide to the Magnetosphere educators guide. (View Less)

This is an activity about the mathematics of oscillation. Using data obtained in ninth and tenth activities in the Exploring the Earth's Magnetic Field: An IMAGE Satellite Guide to the Magnetosphere educators guide, learners will plot the formula... (View More) X(t)=X(0)cos(ft) or X(t)=X(0)sin(ft), depending on the data obtained during the oscillation experiments. Then, the mathematical model for oscillation is further refined by including damping. This is the eleventh activity in the guide and requires prior use and construction of a soda bottle magnetometer. (View Less)

This is an activity about observing the Sun. Learners will construct a pinhole projector to project an image of the Sun, observe and record the size of the projected image, and calculate the diameter of the Sun using the measurements and a known... (View More) distance to the Sun. This activity is from the Touch the Sun educator guide. (View Less)

Materials Cost: 1 cent - $1 per group of students

This is an activity about the magnetic deflection. Learners will observe and measure the deflection that an iron mass causes in a soda bottle magnetometer and plot the data. The data should show the inverse-square cube law of change in the magnetic... (View More) field. This is the twelfth activity in the guide and requires prior use and construction of a soda bottle magnetometer, as well as a six to ten pound container of iron nails (or an equivalent iron mass). (View Less)

This is an activity about oscillation. Learners will observe, time, and graph the data of the side to side motion of the mirror used in the soda bottle magnetometer activity to determine the mirror's oscillation amplitude. This activity requires... (View More) prior construction and experience in use of a soda bottle magnetometer, which is the eighth activity in the Exploring the Earth's Magnetic Field: An IMAGE Satellite Guide to the Magnetosphere educators guide. This is the tenth activity in the guide. (View Less)

This is a mathematical lesson utilizing algebra to investigate Earth's magnetosphere. Learners will solve algebraic distance equations that will show how the distance to the Earth's magnetopause depends on the incoming solar wind pressure. This is... (View More) the twentieth and final activity in the Exploring the Earth's Magnetic Field: An IMAGE Satellite Guide to the Magnetosphere educators guide. (View Less)

This is a lesson about the mathematics of auroras. Learners will be exposed to the mathematical formulas that are used to estimate how much magnetic energy is available in the magnetic tail region of Earth. This is the nineteenth activity in the... (View More) Exploring the Earth's Magnetic Field: An IMAGE Satellite Guide to the Magnetosphere educators guide. (View Less)

This is an activity about polarized light. Learners will use a polarizing filter to build and calibrate a simple polarimeter, use the constructed polarimeter to find sources of polarized light, and measure the angle of polarization of polarized... (View More) light sources and attempt to measure the strength of polarization. This activity is from the Touch the Sun educator guide. (View Less)

Materials Cost: Over $20 per group of students