1 Science Test

Question 0

What is a prediction?

Answer 0

is a statement of what will happen next in a sequence of events

Question 1

What is a hypothesis?

Answer 1

is a possible explanation for an observation that can be tested by scientific investigations.

Question 2

What are three ways you can communicate results to other scientists?

Answer 2

Write science journal articles
Speak at science conventions
Exchange information on the internet

Question 3

What are four ways you can test your hypothesis?

Answer 3

Design an experiment
Make a model
Gather and evaluate evidence or research
Collect data/record observations

Question 4

What are three ways you can analyze results?

Answer 4

Graph results
Classify information
Make calculations

Question 5

What happens when a hypothesis or a group of hypotheses has been tested many times and has been supported by the repeated scientific investigations?

Answer 5

The hypothesis can become a scientific theory.

Question 6

What is a scientific theory?

Answer 6

is an explanation of observations or events that is based on knowledge gained from many observations and investigations.

Question 7

What is a scientific law?

Answer 7

is a rule that describes a pattern in nature

Question 8

What is critical thinking?

Answer 8

comparing what you already know with the information you are given in order to decide whether you agree with it

Question 9

What are the two types of descriptions?

Answer 9

Qualitative- you use your senses to describe an observation.

Quantitive- you use numbers and measurement to describe an observation

Question 10

Is Earth a perfect sphere?

Answer 10

No, Earth is somewhat flattened at the poles with a slight bulge around the equator.

Question 11

What is the atmosphere?

Answer 11

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.

Question 12

What is the Hydrosphere?

Answer 12

The hydrosphere is water on Earth’s surface, water underground, and liquid water in the atmosphere.

Question 13

What is the Cryosphere?

Answer 13

Frozen water, such as glaciers.

Question 14

What is the geosphere?

Answer 14

Is Earth’s entire body.

Question 15

What is the biosphere?

Answer 15

includes all living things on Earth.

Question 16

How do you find the density of something?

Answer 16

D= m/v

Question 17

Which layer of the earth is the most dense?

Answer 17

the bottom layer.

Question 18

What are the two parts of the crust?

Answer 18

The oceanic crust and the continental crust.

Question 19

Is the oceanic curst or the continental curst more dense?

Answer 19

The oceanic crust.

Question 20

What are the four layers of the mantle?

Answer 20

Uppermost mantle, asthensosphere, upper mantle, lower mantle

Question 21

What is the lithosphere?

Answer 21

The crust and the uppermost mantle.

Question 22

What is the asthenosphere?

Answer 22

Rocks are so hot that they begin to melt. The rocks begin to flow.

Question 23

What is the upper mantle and the lower mantle?

Answer 23

Neither of these layers melt because the pressure is so great down there.

Question 24

What is the core?

Answer 24

outer core- it is liquid.

Inner core- It is a ball of solid iron crystal.

Question 25

What creates Earth’s magnetic field?

Answer 25

The earth’s inner core spins faster than the earth’s outer core.

Question 26

What is Earth’s magnetosphere?

Answer 26

The outer part of the magnetic field that interacts with the sun’s particles. It protects us from the sun’s harmful rays.