Earth History
Chemical Interactions
Life
Populations and Ecosystems
8th grade knowledge
100

This rock type is made from layering pre-existing rocks or pieces of once-living organisms.

What are sedimentary rocks?

100

A substance can exist as these 3 forms or phases of matter.

What is solid, liquid and gas? 

100
Some plants use these beautiful features to attract pollinators or for reproduction.

What are flowers?

100

Non-living things that still effect an ecosystem including temperature, Sunlight, soil and humidity.

What are abiotic factors?

100

This phase visible from earth between the first quarter moon and a full moon. 

What is a waxing gibbous moon?

200

This theory says that the outer crust glides over the Earth's rock inner layer and explains why Earth's landforms look the way they do. 

What is the Theory of Plate Tectonics? 

200
This fundamental law of nature states the total amount of energy in a system does not change.

What is Conservation of Energy?

200
While some organisms can produce their own food, these must eat other plants or animals. 

What are consumers?

200

A complex system of producers and consumers in a geographic area that work together to support life. 

What is an ecosystem?

200
Due to the tilt of planet Earth, we experience seasons because of this aspect of light.

What is Solar Angle?

300

The San Andreas fault is an example of this type of fault where two tectonic plates slides past one another.

What is a Strike-slip fault?

300
These simple substances organized into a table in 1869, are the basic building blocks of everything on earth. 

What are elements?

300

The process in which plants use sunlight, water, and carbon dioxide to create oxygen and energy (sugar) for the plant. 

What is photosynthesis? 

300

The variety of life on Earth at all levels from genes to ecosystems. 

What is biodiversity?

300

While the number on the scale might change, this total sum of a person doesn't change if you visit another planet.

What is mass?

400

These biotic items preserved in the rock record are used to identify geologic time or a type of environment in the historical record.

What is an index fossil?

400

This is a process when one or more substances are converted to one or more different substances. 

What is a chemical reaction?

400

If something respires, moves, responds to stimuli, reproduces, grows and is dependent on their environment they are considered this. 

What are living things? (Biotic)

400

The process of changing an organism to better adapt to an ecosystem over time. 

What is Adaptation? (Natural Selection)

400

This law explains why a heavy shopping cart doesn't move as fast as an empty cart when they are pushed with the same force. 

What is force= mass x acceleration? or Newton's Second Law

500

75% of the world volcanos occur in this area, along with 90% of the earthquakes.

What is the ring of fire?

500

In chemistry, we see an increase in kinetic energy of the particles when this increases.

What is temperature? (also take heat)

500

These types of cells contain a nucleus with DNA in the form of chromosomes. 

What are Eukaryotes?

500
When Cells do this, they are breaking down sugar produced in photosynthesis in order to use it for energy. 

What is cellular respiration?

500

This portion of a genotype determines what trait is visible in an offspring?

What is a dominate allele (gene)?