CER
What is a claim?
A claim is a clear statement that answers the question. It does not include any evidence or reasoning.
Draw the density triangle and include mathematical symbols.
Draw it on the board!
What are the 3 Es of sustainability?
Ecological Environment
Economic Environment
Social Environment
A biome is best defined as a large community of ______ and ______ adapted to live in a specific _______.
An ___________ is a community of living things interacting with each other and their non-living environment.
Ecosystem
Strong evidence includes how many pieces of data?
A buoy has a density of 0.79g/cm3 and ocean water has a density of 1.03g/cm3. Will the buoy float or sink?
It will float! The buoy is less dense than the ocean water.
What is our class definition of sustainability?
Sustainability involves meeting the needs of the current generation without risking the needs of future generations.
What three things determine different biomes around the world?
2. Elevation
3. Climate
These organisms make their own food and form the base of every food web.
For bonus points, what vocab word are these organisms called?!
Which sentence is the strongest Claim?
1: I think warmer water dissolves more sugar.
2: Warm water dissolves more sugar than cold water.
Option 2! Warm water dissolves more sugar than cold water. A strong claim will NEVER start with "I think..."
What units of measurement are used for mass and volume (solid and liquid)?
Mass - g, kg
Volume - mL, L
What does the social environment aim to do?
It's all about making sure that all people have a good quality of life, access to clean air/water, a safe living environment, healthcare, education, jobs, and more!
In a convection cell, air rises when its ________ and less _______ than surrounding air.
In a convection cell, air rises when it is warmer and less dense than the surrounding air.
In a food web, what do the arrows represent?
The arrows represent the flow of energy from one living thing to another. Also known as the flow of energy.
What CER component is missing?
A student lists all data values but does not explain their importance.
Reasoning! Reasoning is important because it ties everything together. This is the part where you explain what your evidence means regarding the investigative question.
An object has a mass of 300g and a volume of 150 mL. What is the density?
2g/mL
2 grams per milliliter
Closing a factory improves air quality but causes job losses. Which "E" is benefiting and which "E" is being harmed?
Ecological environment benefits, meanwhile economy is harmed.
True or False: All non-living things in an ecosystem are called abiotic factors.
True!
What is the difference between an autotroph and a heterotroph?
Autotrophs are organisms that can make their own food. Heterotrophs are organisms that cannot make their own food and must eat other organisms.
Rewrite the claim: The object floated because it was less dense than water.
Question: Will the object float or sink?
The object will float.
Why does increasing the volume but keeping mass constant help an object float?
Density is all about how tightly packed matter is. If there is more room, it's less packed, aka less dense.
Does this solution address all three Es?
A river cleanup plan allows public access, funds trash collection jobs, and reduces plastic waste.
Yes! It protects ecosystems, supports jobs, and allows community use!
List three abiotic factors
Water
Soil
Sunlight
Air
What is the 10% rule?
As energy flows through an ecosystem, only 10% of the energy is transferred from one trophic level to the next.
Producers start at 100%
Primary consumers 10%
Secondary consumers 1%
Tertiary consumers 0.1%