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Title:

How Far? How Powerful?

Url:

https://imagine.gsfc.nasa.gov/educators/lessons/how_far/

Creator:

Boyd, Padi
Granger, Kara
Whitlock, Laura

Publisher:

Goddard Space Flight Center
United States. National Aeronautics and Space Administration

Description: This collection of activities and information teaches students about Gamma ray bursts by having them follow exactly the same procedures used by today's astronomers. Students will review some basic physics concepts about light, learn about redshifted spectra and Hubble's Law, and use them to find out how far away, and how powerful, gamma ray bursts truly are. Students will work with a real optical spectrum of a gamma ray burst afterglow taken at the Keck Observatory. They will measure the shifts of spectral lines, deduce the velocity of the astronomical object, and then use Hubble's Law to get its distance. Finally, by knowing how far away an object is, and how much energy it deposited on the detector, students can calculate how much energy was emitted at the source, using the one over r-squared fall-off relation of light.

LC Classification:

Science -- Astronomy -- Non-optical methods of astronomy -- Gamma ray astronomy
Science -- Astronomy -- Non-optical methods of astronomy -- Gamma ray astronomy -- General works, treatises, and textbooks
Science -- Astronomy -- Non-optical methods of astronomy -- Gamma ray astronomy -- Special topics, A-Z -- Bursts
Science -- Physics -- Optics. Light
Science -- Physics -- Optics. Light -- Spectroscopy -- Structure of spectral lines. Effect of pressure. Stack effect, etc.

GEM Subject:

Science
Science -- Physics
Science -- Astronomy
Science -- Physical sciences

Resource Type:

Reference Material
Instructional Material
Audio/Visual -- Image/Image Set
Instructional Material -- Lesson/Lesson Plan
Instructional Material -- Instructor Guide/Manual
Instructional Material -- Experiment/Lab Activity

Format:

Document -- HTML

Audience:

Educator
Learner

Education Level:

High School
Higher Education -- Undergraduate (Lower Division)
Higher Education -- Technical Education (Upper Division)
Higher Education -- Technical Education (Lower Division)

Language:

English

Access Rights:

Free access

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Full Image

Source:

DLESE

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