CER & Variables
What does CER stand for?
Claim, Evidence, Reasoning
Draw what light does when it reflects off of a surface
The light bounces off the object in the same direction it came in.
When particles are cooled, what happens to their energy and speed?
Less energy and slower movement
Water attatches to _______ in the sky in order to form clouds.
CCN (Cloud condensation nuclei)
Why is mount everest growing each year?
The tectonic plates collide and the crust under the mountain gets pushed up.
“I think this works better because it’s cooler.” Explain why is this NOT good evidence?
It's an opinion. Evidence needs FACTS.
If a material transmits no light, what type of material is it most likely?
Opaque
Energy is ____________________ when higher-energy particles come into contact with lower-energy particles.
Transferred
What denisty do warm particles have?
What denisty do cold particles have?
(100 points per question)
Warm: Less dense
Cold: More dense
What are the three main rock types found on Earth?
Igneous, sedimentary, metamorphic
Define independent variable.
Define dependent variable.
Define control varaible.
(100 points per each)
Independent: 1 thing you are changing
Dependent: What you are measuring
Control: The things that stay the same
Define transparent.
Define transluscent.
Define opaque.
(100 points per each)
Transparent: All light goes through
Transluscent: Little light goes through
Opaque: No light goes through.
Draw what the particles look like in 3 cups.
Cup 1: solid particles
Cup 2: Liquid particles
Cup 3: Gas particles
(100 points per each)
Cup 1: particles packed together
Cup 2: Particles a little spread out
Cup 3: Particles spread out all over the cup
What do temperatures need to be like near the group and higher up to make a bigger storm?
Near the ground: Warm
Up high: Cold
Convergent is ____________.
Divergent is ____________.
Transform is ____________.
(Each is worth 100 points)
Convergent is colliding.
Divergent is dividing.
Transform is sliding
A student tests how different temperatures affect how fast ice melts. What is the dependent variable of this statement?
Melting Speed
A student shines a flashlight on three materials: clear plastic, wax paper, and aluminum foil. Which material will allow the most light to pass through, and what does this tell us about the type of material?
Answer both parts for full points.
Most light through: The clear plastic
Material: Transparent
What do you call a system where no matter can enter or leave, such as a tightly sealed container?
A closed system
What kind of weather does high pressure bring?
What kind of weather does low pressure bring?
(200 points per each)
High pressure: Good/clear weather, sunny
Low pressure: Bad weather, cloudy, rainy
The Earth’s outer solid layer that forms the continents and ocean floors is called the...
Crust
In an experiment testing which liquid makes sunflower seeds sprout fastest—water, juice, or soda—identify the independent variable, dependent variable, and one controlled variable.
Independent variable: The type of liquid
Dependent variable: How fast seeds sprout
Controlled variable: The type of seed (or amount of liquid, container type, etc.)
Why can you see someone clearly through a clear glass window but not through a frosted glass window?
Clear glass is transparent, but frosted glass is translucent.
Energy flows from things that are this temperature _____ to this temperature ______.
Warmer to colder.
If a hailstone weighs 4 ounces and the updraft force is 5 ounces, what will likely happen to the hailstone?
It will be lifted higher into the storm
What is the difference between magma and lava?
Magma = Under Ground
Lava = Above Ground