Miscellaneous
What force keeps planets orbiting around the Sun?
this part of the cell contains genetic information
what is the nucleus
these organisms use energy and matter from the environment to make their own food molecules
what are producers
the method of finding the absolute age of rock based on comparing the amounts of unstable, radioactive particles to stable particles in a sample
what is radiometric dating
What is the smallest unit of matter?
atom
This is a test model of a design solution
prototype
this part of the cell converts energy stored in food into a form the cell can use and is called the 'powerhouse' of the cell
what is mitochondria
these organisms get energy and matter by eating other organisms
what are consumers
these fossils appear only in certain layers of rock in Earth and only for a short span of time which helps scientists use relative dating to age fossils
index fossils
What type of rock forms when lava cools and hardens?
igneous
This is the step of the engineering process where you create multiple ideas that fit the need of the engineering problem
brainstorming
this is a part of the plant cell that protects and supports the cell that is not present in animal cells
cell wall
these organisms get energy and matter by breaking down the remains of other organisms that have died
what is decomposers
there are at least 5 of these specific events when large numbers of species die on different parts of Earth during a relatively short period of time (example: the dinosaurs)
mass extinction
What gas makes up 78% of Earth's atmosphere?
nitrogen
this is a tentative, testable, and reasoned explanation for a scientific problem based on existing knowledge or observations
what is hypothesis
these organelles that are only in plant cells that capture energy from sunlight and change it into food that stores energy for the cell to use
chloroplast
this is a system made up of all the living and nonliving things in a given area
an ecosystem
scientists use this study of the development of unborn or unhatched organisms to provide evidence of evolution
embryology
What is the process plants use to make food using sunlight?
photosynthesis
this is a well-supported explanation of a scientific phenomenon based on a body of facts that have been repeatedly confirmed
this is a group of similar cells that are organized to perform a specific function
tissue
this refers to the variety of life in earth's land, freshwater, and marine ecosystems
this important molecule is needed to build and repair body structures and control processes in the body
protein