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How can we save energy?
Turn off the light while not using, do not waste water, limit shower time, close window while using AC
What is this light?
X-ray light
What is this light?
UV light
What is this light?
Laser light
When light bends and separates.
Diffraction
When light changes direction or bends.
Refraction
When light hits the surface and bounces off
Reflection
What is these types of energy?
Light, heat
What is this type of energy?
Sound
What is this type of energy?
Electrical
What is this type of energy?
mechanical
What are 2 forms of energy
Potential and kinetic
Non- Renewable energy sources are
Oil, coal, nuclear, natural gas
Renewable energy sources are
Solar, wind, water, biomass, geothermal
What are 2 types of energy sources
Renewable and non-renewable
Energy can only be ________
changed
Energy can not be __________ and ___________
created, destroyed
What is energy ?
The ability to do work
Earth is the only planet in solar system that has liquid ________
water
Give an example of a building that can withstand the earthquake
Sky tree, Taipei 101, Shanghai tower
Volcanic eruptions happen when __________ (气泡) inside magma, or hot liquid rock, expand
Bubbles
The sleeping volcano that can erupt in future we call
Dormant
What is the name of the city was destroyed by volcano?
Pompeii city
The volcano which is not going to erupt again we call
Extinct
The volcano that is erupting now we call
Active
When ash and lava comes out of volcano we call it
Eruption
Giant mountain with the hole on top we call
Volcano
What should you do during the earthquakes?
Drop, take cover, Hold on
The moving of tectonic plates causes
Earthquake
Pieces of Earth's crust are called
Tectonic plates
The layer of the Earth that we are living on
Crust
The layer which is made of semi-molten rock
Mantle
This layer is made of Liquid Metal
Outer core
This layer of Earth is as hot as Sun!
Inner core
Earth was made from a big cloud of_____ and dust.
gas
Why do we have seasons on Earth? Hint: Earth rotates around _____ and gets different amount of_________
Sun, sunlight
How many layers does Earth have?
4
What is this shape of magnet?
U, horseshoe
What is this shape of magnet?
Bar
How many poles a magnet have?
2
If you put N and N of magnets together they will _____
repel
If you put N and S of magnets together they will _____
attract
The invisible area around the magnet is called
Magnetic field
What are 3 types of metals that magnet can attract?
Iron, cobalt, nickel
A tool for finding direction called
Compass
What are N and S in compass stand for?
N - north, S - South
Compass works because our planet Earth is a giant _______
magnet
What country invented compass?
China
Does magnetic field work in water?
Yes
What metals magnet can NOT attract?
Aluminum, gold, silver, cooper
What is this state of matter?
Solid
What is this state of matter?
Gas
What is this shape of magnet?
circle


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