Welcome to Clip from Spiral logo

Interactive video lesson plan for: How Do We Know The Universe Is ACCELERATING?

Activity overview:

Support MinutePhysics on Patreon: http://www.patreon.com/minutephysics

Aatish Bhatia helped write this video! A big thanks for his help! Here's his blog: http://www.empiricalzeal.com

The universe is expanding – this we know from looking at red shifts of distant galaxies – but the acceleration of the universe's expansion is harder to measure. It requires measuring the change of recession velocity over time, and it's done by comparing Type Ia supernovas as standard candles at different distances, which is how we know the universe is accelerating!

Thanks to everyone who supports MinutePhysics on Patreon!
Link to Patreon supporters here: http://www.minutephysics.com/supporters.html

REFERENCES

Type Ia supernovae
http://hyperphysics.phy-astr.gsu.edu/hbase/Astro/snovcn.html
https://en.wikipedia.org/wiki/Type_Ia_supernova

Luminosity Distance
https://en.wikipedia.org/wiki/Luminosity_distance

Hubble diagram for type Ia supernovas (relatively close to earth): http://www.pnas.org/content/101/1/8/F3.expansion
http://www.astronomy.ohio-state.edu/~thompson/1101/lecture_fate_of_universe.html

Straightforward references:
Ryan Foley talking about WFIRST & Dark Energy
https://youtu.be/BhOAwXYKdmw?t=23m
Dark Energy FAQ:
http://www.preposterousuniverse.com/blog/2011/10/04/dark-energy-faq/
Why does dark energy make the universe accelerate?
http://www.preposterousuniverse.com/blog/2013/11/16/why-does-dark-energy-make-the-universe-accelerate/
David Spergel on dark matter & WFIRST
https://tvr2c.com/2016/06/01/53116-show-feat-professor-david-spergel-on-his-research-spanning-astrophysical-scales/

Slightly-technical references:
Permlutter article (old article but quite well explained & goes into future directions near the end)
http://supernova.lbl.gov/PDFs/PhysicsTodayArticle.pdf

Technical references:
Mukhanov’s Physical Cosmology
http://www.astro.caltech.edu/~george/ay21/readings/Mukhanov_PhysFoundCosm.pdf
Nobel Prize Summary
http://www.nobelprize.org/nobel_prizes/physics/laureates/2011/advanced-physicsprize2011.pdf
Cosmological redshift
https://en.wikipedia.org/wiki/Redshift#Expansion_of_space

MinutePhysics is on Google+ - http://bit.ly/qzEwc6
And facebook - http://facebook.com/minutephysics
And twitter - @minutephysics

Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!

Created by Henry Reich

Tagged under: physics,minutephysics,science

Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.

Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip

Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans

Play this activity

1. Students enter a simple code

2. You play the video

3. The students comment

4. You review and reflect

* Whiteboard required for teacher-paced activities

Share on:

Share How Do We Know The Universe Is ACCELERATING? on Google+ Share How Do We Know The Universe Is ACCELERATING? on Twitter Share How Do We Know The Universe Is ACCELERATING? on Facebook Pin How Do We Know The Universe Is ACCELERATING? Email How Do We Know The Universe Is ACCELERATING?

Ready to see what else Spiral logo can do?

With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.

Quickfire

Carry out a quickfire formative assessment to see what the whole class is thinking

Discuss

Create interactive presentations to spark creativity in class

Team Up

Student teams can create and share collaborative presentations from linked devices

Clip

Turn any public video into a live chat with questions and quizzes

1000s of teachers use Spiral to deliver awesome, engaging activities that capture students' understanding during lessons.

Now it's your turn Sign up

Spiral Reviews by Teachers and Digital Learning Coaches

Spiral
Review of Spiral by teacher: Kathryn Laster @kklaster

Tried out the canvas response option on @SpiralEducation & it's so awesome! Add text or drawings AND annotate an image! #R10tech

Spiral
Review of Spiral by teacher: Room 220 Math Stars @3rdgradeBCE

Using @SpiralEducation in class for math review. Student approved! Thumbs up! Thanks.

Spiral
Review of Spiral by teacher: Miss Ord @ordmiss

Absolutely amazing collaboration from year 10 today. 100% engagement and constant smiles from all #lovetsla #spiral

Spiral
Review of Spiral by teacher: Adam J. Stryker @strykerstennis

Students show better Interpersonal Writing skills than Speaking via @SpiralEducation Great #data #langchat folks!

Spiral
Review of Spiral by teacher: Dr Ayla Göl @iladylayla

A good tool for supporting active #learning.

Spiral
Review of Spiral by teacher: Brett Erenberg @BrettErenberg

The Team Up app is unlike anything I have ever seen. You left NOTHING out! So impressed!

Get the Clip Chrome Extension & Create Video Lessons in Seconds

Add Clip to Chrome