Flashcards in 1 Science Test Deck (27):
What is a hypothesis?
is a possible explanation for an observation that can be tested by scientific investigations.
What is a prediction?
is a statement of what will happen next in a sequence of events
What are three ways you can communicate results to other scientists?
Write science journal articles
Speak at science conventions
Exchange information on the internet
What are four ways you can test your hypothesis?
Design an experiment
Make a model
Gather and evaluate evidence or research
Collect data/record observations
What are three ways you can analyze results?
What happens when a hypothesis or a group of hypotheses has been tested many times and has been supported by the repeated scientific investigations?
The hypothesis can become a scientific theory.
What is a scientific theory?
is an explanation of observations or events that is based on knowledge gained from many observations and investigations.
What is a scientific law?
is a rule that describes a pattern in nature
What is critical thinking?
comparing what you already know with the information you are given in order to decide whether you agree with it
What are the two types of descriptions?
Qualitative- you use your senses to describe an observation.
Quantitive- you use numbers and measurement to describe an observation
Is Earth a perfect sphere?
No, Earth is somewhat flattened at the poles with a slight bulge around the equator.
What is the atmosphere?
is the layer of gases surrounding Earth. It is Earth’s outer-most system. This layer is about 100 km thick. It is a mixture of nitrogen, oxygen, carbon dioxide, and traces of other gases.
What is the Hydrosphere?
The hydrosphere is water on Earth’s surface, water underground, and liquid water in the atmosphere.
What is the Cryosphere?
Frozen water, such as glaciers.
What is the geosphere?
Is Earth's entire body.
What is the biosphere?
includes all living things on Earth.
How do you find the density of something?
Which layer of the earth is the most dense?
the bottom layer.
What are the two parts of the crust?
The oceanic crust and the continental crust.
Is the oceanic curst or the continental curst more dense?
The oceanic crust.
What are the four layers of the mantle?
Uppermost mantle, asthensosphere, upper mantle, lower mantle
What is the lithosphere?
The crust and the uppermost mantle.
What is the asthenosphere?
Rocks are so hot that they begin to melt. The rocks begin to flow.
What is the upper mantle and the lower mantle?
Neither of these layers melt because the pressure is so great down there.
What is the core?
outer core- it is liquid.
Inner core- It is a ball of solid iron crystal.
What creates Earth's magnetic field?
The earth's inner core spins faster than the earth's outer core.