CER & Variables
What does CER stand for?
Claim, Evidence, Reasoning
What does light do when it reflects?
It's when light bounces off a surface.
How do particles move when kintetic energy increases?
They move faster.
Water attatches to _______ in the sky in order to form clouds.
CCN (Cloud condensation nuclei)
What is magma made of?
Molten hot/melted rock.
“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 but reflects all the light hitting it, what type of material is it most likely?
Opaque
This state of matter has particles that are tightly packed in a fixed position, allowing only vibration.
A solid
What denisty do warm particles have?
What denisty do cold particles have?
(100 points per question)
Warm: Less dense
Cold: More dense
Borken up pieces of rock, sand, or mineral fragments that are often transported by wind or water before settling are called ___________.
Sediments
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 claims that exercise improves memory. She conducts an experiment and found that the jogging group scores higher. She writes:
"Exercise helps blood flow to the brain, which improves thinking and memory skills. That explains why the jogging group scored better." Which part is the claim?
Claim: Exercise helps blood flow to the brain, which improves thinking and memory skills.
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.)
A surface was tested with a light sensor. It transmitted 0 Lux and absorbed 20 Lux, while reflecting 100 Lux. What type of material is this most likely?
A shiny, opaque surface like a mirror or polished metal.
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
The rock cycle is driven by these TWO processes....
(250 points per each preocess)
1. Heat
2. Pressure