EMS and Gravity

Gravity

Electromagnetic Spectrum

Light Waves Part 1

Open Ended

What is GRAVITY?

Open Ended

What is the value for speed of light in m/s?

https://www.edumedia-sciences.com/en/media/222-transverse-electromagnetic-wave

Multiple Select

Which of these objects exerts a gravitational pull? (Click all that apply.)

• The Sun

• The Earth

• The Moon

• your pencil

• a fly

3.00 x 10^{8 m/s}

Open Ended

So, if gravity is a force between all objects with mass. ...why aren't all of the objects in my room flying towards me right now?

Multiple Choice

EM waves travel at what speed?

• $$3.0\ x\ 10^{8\ }$$  km/s

• 300,000 m/s

• $$3.0\ x\ 10^8$$  m/s

• 300,000,000 km/s

Multiple Choice

What is something that has a larger gravitational field than the Earth?

• my pencil

• a fly

• Mars

• the moon

• the Sun

Multiple Choice

WHY does the Sun create a LARGER gravitational field than the Earth?

• The Sun has more magnetism than the Earth and this creates a larger gravitational field

• The Sun is hotter than the Earth and this creates a larger gravitational field.

• No one knows why

• The Sun has more MASS than the Earth, so it creates a larger gravitational field than the earth does.

Multiple Choice

Electromagnetic waves vary in

• the speed they travel in a vacuum

• wavelength and frequency

• the way they reflect

• the orientation of their electric and magnetic fields

Multiple Choice

The full range of frequencies of electromagnetic radiation is called

• visible light

• the electromagnetic spectrum

• radio waves

• invisible radiation

Multiple Choice

When objects are MORE MASSIVE, is the force of gravity between them STRONGER or WEAKER?

• When objects are MORE MASSIVE, the gravity between the objects is STRONGER.

• When objects are MORE MASSIVE, the gravity between them is WEAKER.

Audio Response

What did the video clip show? You will need to allow permission to use the microphone on your computer to answer this question

Open Audio Recorder

Multiple Choice

Electromagnetic waves are

• transverse waves

• longitudinal waves.

Multiple Choice

When objects are FARTHER APART, is the force of gravity between them STRONGER or WEAKER?

• When objects are farther apart, the gravity between the objects is STRONGER.

• When objects are farther apart, the gravity between them is WEAKER.

Multiple Choice

Electromagnetic waves

• need a medium to travel through

• can travel through a vacuum

Multiple Choice

Plays important role in wireless communication

• ultraviolet

• visible light

• infrared

• microwave

Multiple Choice

Infrared rays have a shorter wavelength than

• Ultraviolet ray

• X-rays

• gamma rays

• radio waves

Multiple Choice

Helpful in military night vision goggles

• radio wave

• microwave

• infrared

• light

Multiple Choice

You would expect a 452 nanometer EM wave to be which of the following colors

• Red

• Blue

• Green

• Yellow

Multiple Choice

Select the correct order of waves on the EMS from low to high energy

• Radio wave, Microwave, Infrared, Visible, Ultraviolet, X-ray, Gamma

• Visible, Microwave, Infrared, Ultraviolet, X-ray, Gamma, Radio wave

• Gamma, X-ray, Ultraviolet, Visible, Infrared, Microwave, Radio wave

• Microwave, Radio wave, Visible, Infrared, Ultraviolet, X-ray, Gamma

Multiple Choice

Which of these electromagnetic waves has the shortest wavelength?

• Infrared waves

• Light waves

• Radio waves

• X-rays

• Ultraviolet waves

Multiple Choice

What does a wave carry?

• boats

• energy

• matter

• water

The speed of light - The simulation shows the frequency and wavelength for any electromagnetic wave. you can drag the slider to change wavelength and frequency. 

Questions

1. What does this sim tell you? 

2. Define wavelength.

3. How does changing wavelength in the activity vary the light that you see?

4. How do you think light travels?

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​Em Sim

Multiple Choice

What happens to frequency when the energy increases?

• it increases

• it stays the same

• it decreases

Multiple Choice

when the frequency is higher what happens to the wavelength?

• the wavelength gets longer

• The wavelength gets shorter

• the wavelength doesn't change

• I have no idea

Multiple Choice

What is Redshift

• Objects move away us, give off red light

• Objects move towards us, give off blue light

• Objects move towards us, give off red light

• Objects move away us, give off blue light

Multiple Choice

Blueshift frequency

• Is increasing

• Stays the same

• Blueshift has no frequency

• decreases

Multiple Choice

Redshift wavelength

• doesn't change

• stays the same

• Gets longer/increases

• gets shorter/decreases

Multiple Choice

In ____shift, the galaxies appear _____ in color b/c they are moving away from us.

• blue; red

• red; red

• red; blue

• blue; blue

You are not done! You now need to take the retest in Eduphoria!

Make sure you understand this lesson before you complete the retest! Retest MUST be completed by Friday Jan. 20th.