a source of energy that formed from the remains of organisms that lived millions of years ago.
What is a fossil fuel?
100
a tiny part of a chromosome that helps determine a particular trait.
What is a gene?
100
a weakened or dead form of a pathogen that causes an organism to develop immunity against that pathogen
What is a vaccine?
100
the formation of new ocean floor from melted rock that seeps up from the mantle.
What is sea-floor spreading?
100
no longer found living on Earth.
What is extinct?
200
energy from the sun.
What is solar energy?
200
a structure inside a cell that performs a specific function.
What is an organelle?
200
the manipulation of living things to make useful products.
What is biotechnology?
200
an underwater mountain range that forms where ocean plates move apart
What is mid-ocean ridge?
200
a cylinder of ice removed from an ice sheet.
What is an ice core?
300
the energy of the moving particles that make up matter.
What is thermal energy?
300
a structure in the nucleus of a cell that contains DNA.
What is chromosome?
300
a technology that changes the genetic material of a living organism.
What is genetic modification?
300
rock that forms when existing rock is exposed to high heat and pressure.
What is metamorphic rock?
300
the thin, flexible outer covering of a cell that controls which materials enter and leave the cell.
What is the cell membrane?
400
the material from living things that can be used as an energy source.
What is biomass?
400
the form of cell division that produces gametes.
What is meiosis?
400
a technique that produces an organism that is an exact copy of another.
What is cloning?
400
rock that forms when melted rock cools and hardens
What is igneous rock?
400
an organelle found in plant cells and some other organisms that captures the energy of sunlight and converts it into chemical energy during photosynthesis.
What is the chloroplast?
500
energy that travels in the form of waves, through matter or through space.
What is electromagnetic energy?
500
organelles that release energy from glucose.
What is mitochondria?
500
one-celled prokaryotes, some of which can cause disease.
What is bacteria?
500
the age of a rock or fossil described in comparison to that of another rock or fossil.
What is relative age?
500
a device that can change light energy into electricity; also called a solar cell.