Question 1

[ (2.0 × 10⁹)/ (8.0 × 10⁻²)] - (1.0 × 10⁹)= :

Accepted Answer

A)  1.5 × 106 
B)  1.5 × 109 
C)  2.4 × 1010 
D)  2.4 × 1011 
A)  1.5 × 106 
B)  1.5 × 109 
C)  2.4 × 1010 
D)  2.4 × 1011 C

Question 2

(4.0 × 10⁴)× (1.0 × 10⁸)= :

Accepted Answer

A)  4.0 × 108 
B)  5.0 × 1032 
C)  4.0 × 104 
D)  4.0 × 1012 
A)  4.0 × 108 
B)  5.0 × 1032 
C)  4.0 × 104 
D)  4.0 × 1012 D

Question 3

How many football fields (with lengths roughly 100 meters)would fit across our solar system?

Accepted Answer

A)  100 million 
B)  1 billion 
C)  100 billion 
D)  100 trillion 
A)  100 million 
B)  1 billion 
C)  100 billion 
D)  100 trillion C

Question 4

Which of the following might be the diameter of a planet?

Accepted Answer

A)  100 m 
B)  103 m 
C)  106 m 
D)  1010 m 
A)  100 m 
B)  103 m 
C)  106 m 
D)  1010 m

Question 5

Why is astrology a pseudoscience?

Accepted Answer

Although astrology uses precis

Question 6

Express 2 × 10 ⁻³ in everyday language.

Accepted Answer

A)  two-thousandths 
B)  two-hundredths 
C)  two-tenths 
D)  one-sixth 
A)  two-thousandths 
B)  two-hundredths 
C)  two-tenths 
D)  one-sixth

Question 7

Express 0.0003 in standard scientific notation.

Accepted Answer

A)  3.0 × 10 -4 
B)  3.0 × 10 -3 
C)  3.0 × 104 
D)  3.0 × 103 
A)  3.0 × 10 -4 
B)  3.0 × 10 -3 
C)  3.0 × 104 
D)  3.0 × 103

Question 8

Which of the following statements uses the word theory in the sense meant by scientists?

Accepted Answer

A)  The astronomer's theory had not yet been tested by experiments. 
B)  The astronomer's theory had passed so many experimental tests that it had become accepted wisdom throughout the community. 
C)  The astronomer's theory was an elegant hypothesis. 
D)  The astronomer's theory was in conflict with the prevailing explanation. 
A)  The astronomer's theory had not yet been tested by experiments. 
B)  The astronomer's theory had passed so many experimental tests that it had become accepted wisdom throughout the community. 
C)  The astronomer's theory was an elegant hypothesis. 
D)  The astronomer's theory was in conflict with the prevailing explanation.

Question 9

Einstein's explanation for gravity has been tested rigorously using several different experimental techniques.Scientists refer to it as a(n):

Accepted Answer

A)  theory. 
B)  hypothesis. 
C)  truth. 
D)  approximation. 
A)  theory. 
B)  hypothesis. 
C)  truth. 
D)  approximation.

Question 10

How many orders of magnitude are there between the size of a dog and the size of a subatomic particle?

Accepted Answer

A)  5 
B)  15 
C)  25 
D)  35 
A)  5 
B)  15 
C)  25 
D)  35

Question 11

Suppose a galaxy contains 10 billion stars.During a collision with another galaxy,400 million of those stars are stripped away.How many stars remain inside the first galaxy? Express your answer in standard scientific notation.

Accepted Answer

The answer of Suppose a galaxy contains 10 billion stars.During...

Question 12

Sally Scientist is conducting research into the rates at which birds flap their wings (or "flap rate"),which she notices varies between bird species.How might her research best proceed,according to the scientific method?

Accepted Answer

A)  Sally hypothesizes that the flap rate depends upon the bird's weight and constructs a mathematical model describing her theory. 
B)  Sally hypothesizes that the flap rate depends upon the bird's weight. She then designs an experiment to measure flap rate as a set of birds grow and reports her results. 
C)  Sally observes dozens of species of birds and records their flap rates and other characteristics. She then measures which characteristics correlate best with flap rate and reports her findings. 
D)  Sally observes dozens of species of birds and finds the highest flap rate. 
A)  Sally hypothesizes that the flap rate depends upon the bird's weight and constructs a mathematical model describing her theory. 
B)  Sally hypothesizes that the flap rate depends upon the bird's weight. She then designs an experiment to measure flap rate as a set of birds grow and reports her results. 
C)  Sally observes dozens of species of birds and records their flap rates and other characteristics. She then measures which characteristics correlate best with flap rate and reports her findings. 
D)  Sally observes dozens of species of birds and finds the highest flap rate.

Question 13

In the simplest form of the scientific method,which of the following correctly describes the sequence in which science proceeds?

Accepted Answer

A)  experiment, hypothesis, observation 
B)  theory, observation, experiment 
C)  observation, theory, experiment 
D)  observation, hypothesis, experiment 
A)  experiment, hypothesis, observation 
B)  theory, observation, experiment 
C)  observation, theory, experiment 
D)  observation, hypothesis, experiment

Question 14

Sally Scientist would like to choose a birthday gift for her friend Evan Experimenter.Explain how she might use the scientific method to make her choice.

Accepted Answer

Sally might observe what Evan likes to w

Question 15

What kind of astronomical object is hundreds of millions of times smaller than the Milky Way galaxy?

Accepted Answer

The answer of What kind of astronomical object is hundreds...

Question 16

Which of the following was a way in which prehistoric cultures used astronomy?

Accepted Answer

A)  as a mathematical calculating machine 
B)  for navigation 
C)  for measuring distances 
D)  as hunting guides 
A)  as a mathematical calculating machine 
B)  for navigation 
C)  for measuring distances 
D)  as hunting guides

Question 17

How many orders of magnitude are there between the diameter of a planet like Earth and the typical size of a star like the sun?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  seven 
A)  one 
B)  two 
C)  three 
D)  seven

Question 18

How many orders of magnitude are there between the size of a proton and the diameter of a star?

Accepted Answer

The answer of How many orders of magnitude are there...

Question 19

What is the correct order of actions that scientists take in their studies,according to the simple version of the scientific method?

Accepted Answer

Observation,hypothes

Question 20

Which of the following might correctly characterize the difference in diameter between a grain of interstellar dust and an Earth-like planet?

Accepted Answer

A)  102 
B)  10-10 
C)  12 orders of magnitude 
D)  200 times bigger 
A)  102 
B)  10-10 
C)  12 orders of magnitude 
D)  200 times bigger

[ (2.0 × 10⁹)/ (8.0 × 10⁻²)] - (1.0 × 10⁹)= :

(4.0 × 10⁴)× (1.0 × 10⁸)= :

How many football fields (with lengths roughly 100 meters)would fit across our solar system?

Which of the following might be the diameter of a planet?

Why is astrology a pseudoscience?

Express 2 × 10 ⁻³ in everyday language.

Express 0.0003 in standard scientific notation.

Which of the following statements uses the word theory in the sense meant by scientists?

Einstein's explanation for gravity has been tested rigorously using several different experimental techniques.Scientists refer to it as a(n):

How many orders of magnitude are there between the size of a dog and the size of a subatomic particle?

Suppose a galaxy contains 10 billion stars.During a collision with another galaxy,400 million of those stars are stripped away.How many stars remain inside the first galaxy? Express your answer in standard scientific notation.

Sally Scientist is conducting research into the rates at which birds flap their wings (or "flap rate"),which she notices varies between bird species.How might her research best proceed,according to the scientific method?

In the simplest form of the scientific method,which of the following correctly describes the sequence in which science proceeds?

Sally Scientist would like to choose a birthday gift for her friend Evan Experimenter.Explain how she might use the scientific method to make her choice.

What kind of astronomical object is hundreds of millions of times smaller than the Milky Way galaxy?

Which of the following was a way in which prehistoric cultures used astronomy?

How many orders of magnitude are there between the diameter of a planet like Earth and the typical size of a star like the sun?

How many orders of magnitude are there between the size of a proton and the diameter of a star?

What is the correct order of actions that scientists take in their studies,according to the simple version of the scientific method?

Which of the following might correctly characterize the difference in diameter between a grain of interstellar dust and an Earth-like planet?

A Universe Made, a Universe Discovered

A Universe of Universal Laws

A Universe of Universal Laws

The Architecture and Birth of Planetary Systems

Home Base: Earth and Moon

Sibling Worlds: Mercury, Venus, and Mars

Gas, ice, and Stone: the Outer Planets

Life and the Search for Habitable Worlds

The Sun As a Star

Measuring the Stars: the Main Sequence and Its Meaning

Nursery of the Stars: the Interstellar Medium and Star Formation

To the Graveyard of Stars: the End Points of Stellar Evolution

Down the Rabbit Hole: Relativity and Black Holes

Our City of Stars: the Milky Way

A Universe of Galaxies

The Cosmic Web: the Large-Scale Structure of the Universe

Cosmology

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Exam 1: Getting Started: Science, astronomy, and Being Human

[ (2.0 × 10⁹)/ (8.0 × 10⁻²)] - (1.0 × 10⁹)= :

(4.0 × 10⁴)× (1.0 × 10⁸)= :

How many football fields (with lengths roughly 100 meters)would fit across our solar system?

Which of the following might be the diameter of a planet?

Why is astrology a pseudoscience?

Express 2 × 10 ⁻³ in everyday language.

Express 0.0003 in standard scientific notation.

Which of the following statements uses the word theory in the sense meant by scientists?

Einstein's explanation for gravity has been tested rigorously using several different experimental techniques.Scientists refer to it as a(n):

How many orders of magnitude are there between the size of a dog and the size of a subatomic particle?

Suppose a galaxy contains 10 billion stars.During a collision with another galaxy,400 million of those stars are stripped away.How many stars remain inside the first galaxy? Express your answer in standard scientific notation.

Sally Scientist is conducting research into the rates at which birds flap their wings (or "flap rate"),which she notices varies between bird species.How might her research best proceed,according to the scientific method?

In the simplest form of the scientific method,which of the following correctly describes the sequence in which science proceeds?

Sally Scientist would like to choose a birthday gift for her friend Evan Experimenter.Explain how she might use the scientific method to make her choice.

What kind of astronomical object is hundreds of millions of times smaller than the Milky Way galaxy?

Which of the following was a way in which prehistoric cultures used astronomy?

How many orders of magnitude are there between the diameter of a planet like Earth and the typical size of a star like the sun?

How many orders of magnitude are there between the size of a proton and the diameter of a star?

What is the correct order of actions that scientists take in their studies,according to the simple version of the scientific method?

Which of the following might correctly characterize the difference in diameter between a grain of interstellar dust and an Earth-like planet?

A Universe Made, a Universe Discovered

A Universe of Universal Laws

A Universe of Universal Laws

The Architecture and Birth of Planetary Systems

Home Base: Earth and Moon

Sibling Worlds: Mercury, Venus, and Mars

Gas, ice, and Stone: the Outer Planets

Life and the Search for Habitable Worlds

The Sun As a Star

Measuring the Stars: the Main Sequence and Its Meaning

Nursery of the Stars: the Interstellar Medium and Star Formation

To the Graveyard of Stars: the End Points of Stellar Evolution

Down the Rabbit Hole: Relativity and Black Holes

Our City of Stars: the Milky Way

A Universe of Galaxies

The Cosmic Web: the Large-Scale Structure of the Universe

Cosmology

Filters