Making Sounds
Reflecting Sounds
Structure of the Earth
Plate Boundaries
Solar and Lunar Eclipses
100
All sounds are produced by a __________ source.
Vibrating
100
Trivia
What is the scale used to measure loudness?
Decibel
100
List the layers of Earth starting from the outermost layer to the innermost layer.
100
What type of plate bounday refuls in the formation of a:
a) Volcano
b) Fold mountain
a) Diverging
b) Converging
100
Trivia
What is the fourth planet from the sun?
Mars
200
All sounds can differ in two ways. What are they?
Loudness and pitch
200
What do you a call a sound wave that "bounces" off a surface?
Echo
200
What tectonic plate are we currently on?
Eurasian plate
200
What is subduction?
Subduction occurs at plate boundaries where one plate is pushed under another into the mantle.
200
What word describes an object that light can not pass through.
Opaque
300
Loudness is a type of:
a) Force
b) Energy
c) Matter
d) Particle
b) Energy
300
What type of surfaces does sounds echo off best?
Hard, flat surfaces
300
a) What metals form the inner and outer core?
b) How are they different in the inner and outer core?
a) Iron and nickel
b) The are molten (liquid) in the outer core and solid in the inner core
300
What is the difference between magma and lava?
Magma is the molten rock from the mantle when it is underground. Lave is the molten rock when it rises to the surface.
300
What are some safety precautions to take during a solar eclipse?
Wearing special eclipse sunglasses
Using a pinhole viewer
400
Select the correct word for each sentence
a) The particles in the medium move parallel or perpendicular to the direction of the sound wave.
b) This means sound is an example of a transverse or longitudinal wave.
a) Parallel
b) Longitudinal
400
Some animals are able to detect their surroundings using the reflection of sounds waves off surfaces. What is this called?
Echolocation
400
What is the name of the "supercontinent" that existed 100s of millions of years ago when all the continents were connected?
Pangea
400
Why are there so many volcanoes at the "ring of fire"?
The ring of fire is made of multiple plate boundaries
400
Draw a diagram showing the arrangement of the Sun, moon and Earth during a:
a) Solar eclipse
b) Lunar eclipse
500
Would sounds travel fastest in air, water or steel.
Explain why.
Steel, becuase the particles in a solid and most tightly packed together so the partciles are able to collide and transfer the sound wave faster.
500
A student claps their hands in front of a large wall. 0.5 seconds later they hear an echo. If the sound travelled at 300 m/s, how far away is the wall?
d = st
d = 300 x 0.5
d = 150 m (total distance from the student to the wall and back)
d = 75 m (distance between student and wall)
500
Describe what causes the different sections of the crust (plates) to slowly drift.
They are "floating" on top of the mantle.
500
Describe the differences between extinct, dormant, and active volcanoes.
Extinct - will not erupt again
Dormant - have not erupted for a very long time
Active - may erupt at any time
500
BONUS (NOT ON TEST)
a) What is the darker region of a shadow during an eclipse called?
b) What is the ligher region of a shadow during an eclipse called?
a) Umbra
b) Penumbra