Science Fusion Unit 4

What is the definition of FOSSIL?

• A long cylinder of ice obtained from drilling through ice caps or ice sheets; used to study past climates.

• Faults or intrusions are younger than any layer of rock they cut through.

• The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock.

• The weather conditions in an area over a long period of time.

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What is the definition of LAW OF SUPERPOSITION?

• A method of determining the absolute age of an object by comparing the amount of parent isotope vs. daughter isotope and using half-life.

• Fossils that are used to estimate the absolute age of the rock layers in which they are found. These organisms must have lived during a short time span, have unique features, and be common over large areas.

• Younger rocks lie above older rocks, if layers are left undisturbed.

• Faults or intrusions are younger than any layer of rock they cut through.

What is the definition of HALF-LIFE?

• Isotope that is unstable and decays; also called a radioactive isotope.

• Stable isotope that forms after the parent isotope decays.

• The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope.

• Any method of determining whether an event or object is older or younger than other events or objects.

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Joining of hydrogen atoms to form helium

• Nuclear Fusion

• Nuclear Fission

• Sun spots moving together

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NGSS.HS-PS1-8

Nuclear Fusion is when ________ atoms are squeezed together forming _________ atoms.

• Hydrogen / Helium

• Nitrogen / Hydrogen

• Oxygen / Neon

• Helium / Oxygen

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NGSS.HS-PS1-8

Which of the following chemical reactions is responsible for producing energy in the Sun?

• Helium nuclei combining by nuclear fission

• Oxygen molecules causing combustion of solar fuel cells

• Hydrogen nuclei combining to form Helium through nuclear fusion

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NGSS.HS-PS1-8

The energy from the sun is created by a process called:

• nuclear fission

• nuclear fusion

• nuclear reaction

• nuclear core

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Stars give off heat and light in a process called ___________.

• nuclear fusion

• supernova

• luminosity

• spectroscopy

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This process, called nuclear fusion, is the energy source of all __________.

There may be more than one answer for this questions.

• planets

• suns

• stars

• plants

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NGSS.HS-PS1-8

What is the definition of CATASTROPHISM?

• Any method of determining whether an event or object is older or younger than other events or objects.

• A principle that geologic processes that occurred in the past can be explained by current geologic processes.

• The scientific study of the origin, history, and structure of Earth and the processes that shape Earth.

• The principle that states that all geologic change occurs suddenly.