![Physical Science](https://www.bartleby.com/isbn_cover_images/9780077862626/9780077862626_largeCoverImage.gif)
Concept explainers
The premise that the present is the key to understanding the past is called
history.
principle of uniformity.
principles of geology.
philosophy.
![Check Mark](/static/check-mark.png)
From the following options, the premise that the present is the key to understanding the past is known as:
History
Principle of uniformity
Principles of geology
Philosophy
Answer to Problem 1AC
Solution:
Option (b) is correct.
Explanation of Solution
Introduction:
James Hutton introduced the idea of unchanging, catastrophically formed landscapes.
Explanation:
Reason for correct option:
This idea of Hutton led to the concept of uniform changes, i.e., current changes are consistent with changes that take place in the distant past. This frame of reference is called the principle of uniformity.
The principle of uniformity may be represented by a single statement, “the present is the key to the past”.
Hence, option (b) is correct.
Reasons for incorrect option:
History is the study of past. Hence, option (a) is incorrect.
There is no such phrase as principles of geology. Hence, option (c) is incorrect.
Philosophy is the study of meaning, existence and knowledge. Hence, option (d) is incorrect.
Conclusion:
Principle of uniformity is codified by the phrase that the present is the key to understand the past.
Want to see more full solutions like this?
Chapter 19 Solutions
Physical Science
Additional Science Textbook Solutions
Principles of Anatomy and Physiology
Fundamentals Of Thermodynamics
Loose Leaf For Integrated Principles Of Zoology
Introductory Chemistry (6th Edition)
- Need complete solution Pleasearrow_forwardBelow you will find 100 m split times for the American and France men’s 4x100 meter free style relay race during the 2008 Beijing Summer Olympics). Fill out the chart below. Calculate average speed per split (m/s). Show all work.arrow_forwardThe magnitude of vector →A i s 261. m and points in the direction 349.° counterclockwise from the positive x-axis. Calculate the x-component of this vector . Calculate the y-component of this vector.arrow_forward
- No chatgpt plsarrow_forward4.4 A man is dragging a trunk up the loading ramp of a mover's truck. The ramp has a slope angle of 20.0°, and the man pulls upward with a force F whose direction makes an angle of 30.0° 75.0° with the ramp (Fig. E4.4). (a) How large a force F is necessary for the component Fx parallel to the ramp to be 90.0 N? (b) How large will the component Fy perpendicular to the ramp be then? Figure E4.4 30.0 20.0°arrow_forward1. * A projectile is shot from a launcher at an angle e, with an initial velocity magnitude v., from a point even with a tabletop. The projectile lands on the tabletop a horizontal distance R (the "range") away from where it left the launcher. Set this up as a formal problem, and solve for vo (i.e., determine an expression for Vo in terms of only R, 0., and g). Your final equation will be called Equation 1.arrow_forward
- 2. A projectile is shot from a launcher at an angle 0,, with an initial velocity magnitude vo, from a point even with a tabletop. The projectile hits an apple atop a child's noggin (see Figure 1). The apple is a height y above the tabletop, and a horizontal distance x from the launcher. Set this up as a formal problem, and solve for x. That is, determine an expression for x in terms of only v₁, o,y and g. Actually, this is quite a long expression. So, if you want, you can determine an expression for x in terms of v., 0., and time t, and determine another expression for timet (in terms of v., 0., y and g) that you will solve and then substitute the value of t into the expression for x. Your final equation(s) will be called Equation 3 (and Equation 4).arrow_forward4.56 ... CALC An object of mass m is at rest in equilibrium at the origin. At t = 0 a new force F(t) is applied that has components Fx(t) = k₁ + k₂y Fy(t) = k3t where k₁, k2, and k3 are constants. Calculate the position (1) and veloc- ity (t) vectors as functions of time.arrow_forward4.14 ⚫ A 2.75 kg cat moves in a straight line (the x-axis). Figure E4.14 shows a graph of the x- component of this cat's velocity as a function of time. (a) Find the maximum net force on this cat. When does this force occur? (b) When is the net force on the cat equal to zero? (c) What is the net force at time 8.5 s? Figure E4.14 V₁ (m/s) 12.0 10.0 8.0 6.0 4.0 2.0 0 t(s) 2.0 4.0 6.0 8.0 10.0arrow_forward
- Horizons: Exploring the Universe (MindTap Course ...PhysicsISBN:9781305960961Author:Michael A. Seeds, Dana BackmanPublisher:Cengage LearningAn Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage LearningAstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStax
- Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305960961/9781305960961_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305079137/9781305079137_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781938168284/9781938168284_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337672252/9781337672252_smallCoverImage.jpg)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337399920/9781337399920_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305804562/9781305804562_smallCoverImage.jpg)