Page 204 - The Ontario Curriculum, Grades 11 and 12: Science, 2008 (revised)

Grade 12, University Preparation
d1. analyse the operation of technologies that use gravitational, electric, or magnetic fields, and assess the technologies’ social and environmental impact;
d2. investigate, in qualitative and quantitative terms, gravitational, electric, and magnetic fields, and solve related problems;
d3. demonstrate an understanding of the concepts, properties, principles, and laws related to gravitational, electric, and magnetic fields and their interactions with matter.
D1. Relating Science to Technology, Society, and the Environment
D2. Developing Skills of Investigation and Communication
d. grAvitAtionAl, electric, And mAgnetic fieldS
OVERALL EXPECTATIONS
By the end of this course, students will:
THE ONTARIO CURRICULUM, GRADES 11 AND 12 | science
SPECIFIC EXPECTATIONS
By the end of this course, students will:
d1.1 analyse the operation of a technological sys- tem that uses gravitational, electric, or magnetic fields (e.g., a home entertainment system, a computer, magnetic strips on credit cards) [AI, C]
Sample questions: How are gravitational field maps used to correct errors in navigational sys- tems used in unmanned underwater vehicles (UUVs)? How are magneto-rheological (MR) fluid dampers used in buildings to absorb the shocks from earthquakes? How can radio fre- quency identification (RFID) chips be used for inventory tracking in stores and warehouses?
d1.2 assess the impact on society and the environ- ment of technologies that use gravitational, electric, or magnetic fields (e.g., satellites used in surveillance or storm tracking, particle accel- erators that provide high-energy particles for medical imaging) [AI, C]
Sample issue: The radiation produced by the magnetic and electric fields of electron acceler- ators is used to treat tumours. In conjunction with other therapies, radiation increases the survival rate of cancer patients, but safeguards are needed to ensure that patients receive safe doses of radiation and that medical personnel and the immediate environment are not contaminated.
Sample questions: What are some of the uses of particle accelerators, and how have these bene- fited society? What is the effect on human health of long-term exposure to the electrical fields created by high-voltage lines? How could zero-gravity experiments on agricultural prod- ucts benefit society and the environment? What are the environmental benefits of using technol- ogy involving gravitational fields to search for mineral deposits?
By the end of this course, students will:
d2.1 use appropriate terminology related to fields, including, but not limited to: forces, potential energies, potential, and exchange particles [C]
d2.2 analyse, and solve problems relating to, Newton’s law of universal gravitation and circular motion (e.g., with respect to satellite orbits, black holes, dark matter) [AI]
d2.3 analyse, and solve problems involving, electric force, field strength, potential energy, and potential as they apply to uniform and non-uniform electric fields (e.g., the fields produced by a parallel plate and by point charges) [AI]
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