Environmental Science (Chapter 1 ) Question Preview (ID: 60189)


Review Of Topics And Example Questions From Chapter 1. TEACHERS: click here for quick copy question ID numbers.

Carbon–14 half–life is 5720 years. If a fossil containing Carbon–14 went through 4 half–lives, how old is the fossil?
a) 22,880 years
b) 2,860 years
c) 1,430 years
d) 715 years

Surfaces that have more craters are
a) older
b) younger
c)
d)

If you began with 300g of a parent isotope, you would have 75g of that isotope after two half–life of that isotope. How many grams are left after 3 half–lives?
a) 22,500 g
b) 37.5 g
c) 4g
d) 225 g

What do scientists count in order to learn the age of a planetary surface? __________________
a) tree rings
b) craters
c) parent isotopes
d) rocks

A process in which the materials of Earth’s surface are loosened, dissolved, or worn away and transported from one place to another is called _________________.
a) erosion
b) weathering
c) decomposition
d) mass wasting

_____________ is the time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope.
a) Half-life
b) Radioactive Decay
c) Crater Counting
d) Relative Dating

An approximate age of something compared to some other event in history is called____________
a) Half-life
b) Radioactive Decay
c) Crater Counting
d) Relative Dating

Why is radioactive decay used to determine the absolute age of rocks?
a) Radioactive decay happens at a relatively constant rate
b) Radioactive decay happens at an unpredictable rate
c) Radioactive decay is an unreliable method for determining the age of rocks
d) Radioactive decay is not used to determine the age of rocks

_______________ is a spontaneous process by which an unstable nucleus loses energy.
a) Half-life
b) Radioactive decay
c) Crater Counting
d) Relative Dating

________________ is a method of determining the absolute age of an object by comparing the relative percentages of a radioactive (parent) isotope and a stable (daughter) isotope.
a) Plate Tectonics
b) Crater Counting
c) Relative Dating
d) Radiometric dating

________________ is the numeric age of an object or event, often stated in years before the present, an example is radiometric dating.
a) Absolute Dating
b) Relative Dating
c) Half-Life
d) Crater Counting

________________ is an educated guess.
a) Theory
b) Law
c) Hypothesis
d) Idea

______________ is that theory that states the universe began about 13.7 billion years ago in one giant explosion.
a) Theory of Relativity
b) Big Bang Theory
c) Expanding Universe Theory
d) Red Shift Theory

How old is Earth? ____ billion years old.
a) 4.6
b) 4.7
c) 4.8
d) 4.9

__________________ is an object launched into space by NASA around the earth in 1990 to provide information about the universe.
a) Hubble Telescope
b) International Space Station
c) Space X
d) Mars Rover

_____________ is all of space and everything in it including space, stars, and planets.
a) Nebula
b) Big Bang Theory
c) Galaxy
d) Universe

A(n) _____________ is a substance that cannot be broken down into a simpler substance.
a) element
b) isotope
c) material
d) particle

Atoms of the same element that have a different number of neutrons are called _______________.
a) element
b) isotope
c) material
d) particle

Which of these is NOT a reason why does Earth has less craters than Mars?
a) Earth was hit fewer times than Mars
b) Earth has tectonic plates
c) Earth undergoes weathering and erosion
d) Earth's surface is always changing

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