Unit 1 – Electromagnetic Radiation Study Guide
Name:
Date:
Pd:
chemical - nuclear fusion - gravity - mass - quickly - slowly - electromagnetic radiation - photon - energy decreases - frequency - ionizing - electrons – cancer - two - Helium - Nuclear - atom - more
The sun conducts nuclear fusion to combine ____________________ hydrogen atoms to produce a
____________________ atom. This is a ____________________ reaction because it changes the nucleus and
creates a new ____________________ .This type or reaction will release much ____________________
energy than a ____________________ reaction.
This process of ____________________ in a star is driven by ____________________ so therefore stars with
more ____________________ have more gravity and will run through their fuel much more
____________________ . Stars with less mass will do nuclear fusion more ____________________ because
they have less gravity to drive and speed up the reaction.
The energy from the sun reaches the Earth as ____________________ . Light behaves as both a wave of
electromagnetic radiation and a particle called a ____________________ . As the ____________________ of
an electromagnetic wave increases its wavelength ____________________ and its ____________________
increases. After visible light on the spectrum increasing energy creates ____________________ radiation
which is dangerous. Ionizing radiation will remove ___________ from atoms creating reactive substances.
One of the dangers of exposure to ionizing radiation is development of ____________________ . This occurs
because your DNA becomes mutated.
Wave
Interactions
What happens to the
wave/energy
Diagram of interaction
When did we see this
interaction in class?
Reflection
Absorption
Transmission
Refraction
Diffraction
Nuclear Fusion – Draw the process of how 2 hydrogen atoms fuse to make 1 helium atoms in the Sun.
Light Interactions – Draw a diagram to show what happens as light passes through two openings. What
would it look like if particles passed through two openings?
Light (Waves through two openings)
Particles through two openings
Wave-Particle Duality of Light – Light acts as both a particle and a wave. It depends on the experiment that
you are doing. The wave travels as an electromagnetic wave and the particle is called a photon that carriers a
specific amount of energy. Check off the light interactions below if they provide evidence that light as a wave
or if light acts as a particle.
Particle
Wave Summarize your learning from this table and paragraph above.
Reflection
Refraction
Interference
Diffraction
Polarization
Photoelectric Effect
Acrostic – Complete the acrostic by using the first letter of the word below to start a phrase of something
you’ve learned this unit.
Energy is determined by the wavelength of light
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