Water covers nearly ____ % of the earth's surface.
What is 70?
100
Atoms are made of three types of particles called ______, ________, and _______.
What are protons, electrons and neutrons?
100
The science which explores microscopic organisms including viruses, bacteria, protozoa and fungi is known as __________.
What is microbiology?
100
The nonliving things of an ecosystem are called _____ factors.
What are abiotic factors?
100
_____________ states that older rock layers lie beneath younger rock layers...unless they have been disturbed by something like an earthquake.
What is the Law of Superposition?
200
The tendency of water to form weak bonds and stick together is called _____.
What is cohesion?
200
Which of the following are elements? Water, Gold, Air, Fire, Carbon, Pepper, Aluminum, and Soil
What is Gold, Carbon and Aluminum?
200
______ are non-living particles which can invade healthy cells and cannot be treated with antibiotics.
What is a virus?
200
_______ is a relationship that occurs when two or more organisms need the same resources.
What is competition?
200
A _______ is the preserved remains or traces of an organism that lived in the past.
What is a fossil?
300
The tendency of water molecules to stick to other things is called ____.
What is adhesion?
300
Which of the following represents a mixture?
-a piece of Copper wire
-the Oxygen gas in a pressurized tank
-a slice of mushroom pizza
-a lead fishing weight
What is a slice of mushroom pizza?
300
_____ are prokaryotic, single celled organisms which can affect healthy cells and may be treated with antibiotics.
What are bacteria?
300
A ____ relationship exists between organisms of two different species that live together in direct contact.
What is a symbiotic relationship?
300
The ____________ is divided into four eras of time.
What is the geologic time chart?
400
Because water can dissolve most things, it is called the ______.
What is the universal solvent?
400
Which of the following are compounds? Water, Cement, Tossed Salad, Aspirin, Helium, Nitrogen, Paper
What are Water, Cement, Aspirin, and Paper?
400
_________ are organisms like mushrooms which reproduce by forming __________.
What are Fungi, spores?
400
The first trophic level of a food chain consists of producers or _____.
What are autotrophs?
400
The Earth is thought to have formed _________ ago with the _______ Era.
What is 4.6 billion years ago, Precambrian
500
If you pour cold water into a container of warm water, the cold water will sink because it has a greater ______.
What is density?
500
What are three properties of metals?
What is the ability to roll them into thin sheets (malleability), the ability to stretch them into thin wires (ductility), the ability to conduct electricity and heat?
500
What is the difference between a pandemic and an epidemic?
What is a pandemic is a disease which is more widespread (world over) and an epidemic is a disease which affects a smaller area?