Table of Contents
- 1 What energy is a kite stuck in a tree have?
- 2 When a plant falls from a window its thermal energy is transformed into kinetic energy?
- 3 Does lowering an object decreases its potential energy?
- 4 What happen when you stretch the rubber band and release it?
- 5 When work is done energy is transferred?
- 6 What is the 3 version of work formula?
- 7 How are human activities related to environmental change?
- 8 How is population growth related to environmental change?
What energy is a kite stuck in a tree have?
Sci Spring Exam 6th
| Question | Answer |
|---|---|
| (Sci) A kite stuck in a tree has _____ energy. | Potential |
| (Sci) A blimp flying around over the Super Bowl has _____ energy. | Kinetic and Potential |
| (Sci) In every energy transformation, some energy is always “lost” as ______ energy. | Thermal |
When a rubber band is stretched Does it have energy?
You input potential (stored) energy into the rubber band system when you stretched the rubber band back. Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy.
When a plant falls from a window its thermal energy is transformed into kinetic energy?
Chapter 4 Study Guide
| Question | Answer |
|---|---|
| When a plant falls from a window its _____ energy is transformed into kinetic energy. | potential |
| The ______ states that although energy can change forms it can never be created or destroyed. | Law of Conservation of Energy |
| Thermal energy is measured in ____. | joules |
Which formula below defines work?
To express this concept mathematically, the work W is equal to the force f times the distance d, or W = fd. If the force is being exerted at an angle θ to the displacement, the work done is W = fd cos θ.
Does lowering an object decreases its potential energy?
T/F – Lowering an object decreases its potential energy. False – The sum of potential and kinetic energy in a system is called the [mechanical] energy. T/F – As an object falls its potential energy is lost to the air around it. False – As an object falls its [kinetic] energy is lost to the air around it.
Does the total amount of energy ever change?
The universe itself is a closed system, so the total amount of energy in existence has always been the same. The forms that energy takes, however, are constantly changing. The sum of these is called mechanical energy. The heat in a hot object is the mechanical energy of its atoms and molecules in motion.
What happen when you stretch the rubber band and release it?
A rubber band is an elastic material in nature. When stretched, it changes its shape and when the applied force is removed, it regains its original shape. Also, if excessive force is applied then the rubber band would break.
What is it called when energy changes form?
Energy transformation, also known as energy conversion, is the process of changing energy from one form to another.
When work is done energy is transferred?
Energy is the ability of a person or an object to do work or to cause a change. When you do work on an object, some of your energy is transferred to the object. You can think of work as the transfer of energy. In fact, both work and energy are measured in the same unit, the joule.
What are the two factors that affect kinetic energy?
1. Explain that there are two factors that affect how much kinetic energy a moving object will have: mass and speed. Have students complete this demonstration to learn how mass influences an object’s kinetic energy.
What is the 3 version of work formula?
There are three key ingredients to work – force, displacement, and cause.
Why are people so concerned about environmental change?
The subject of detrimental environmental change has received much attention in the news media for some time. Scientists, policy makers, and the public have become increasingly concerned about the threat that such change, if it continues unabated, poses for the future.
Since the human activities that are implicated in detrimental environmental change are aimed at satisfying human needs and desires, those activities can only be expected to increase as the population grows. And population growth, worldwide, is expected to continue for the near future at
Which is the best citation for 5 environmental change?
Suggested Citation: “5 Environmental Change.” National Research Council. 1995. Emerging Needs and Opportunities for Human Factors Research. Washington, DC: The National Academies Press. doi: 10.17226/4940.
Since the human activities that are implicated in detrimental environmental change are aimed at satisfying human needs and desires, those activities can only be expected to increase as the population grows. And population growth, worldwide, is expected to continue for the near future at Suggested Citation: “5 Environmental Change.”