Question

Video transcript on Current Electricity -

Hi! today we'll learn about electrical current. There are two main types of electricity static electricity and the current electricity. Static electricity is produced by rubbing together two or more objects and making friction. That’s funny!

What is Electrical Current

Electrical current is the flow of electric charge across an electrical field. Now let’s learn about electrical current in detail!

What is Current

Current is the rate of flow of electrons. It’s produced by moving electrons and it’s measured in amperes. Unlike static electricity, electricity electrical current must flow through a conductor. Usually copper wire current with electricity is similar to the current when you think of a river. The river flows from one spot to another and the speed it moves is the speed of the current. With electricity current, it’s a mass of the amount of energy transferred over a period of time.

Current with Electricity

That energy is called a flow of electrons. One of the results of current is the heating of the conductor when an electric stove heats up it’s because of the flow of current.

Sources of Electricity

There are different sources of electrical current including the chemical reactions taking place in a battery. The most common source is the generator. A simple generator produces electricity when a coil of copper turns inside a magnetic field. In a power plant, electromagnets spinning inside many coils of copper wire generate vast quantities of electrical current. There are two main kinds of electric current. Direct - DC, and alternating- AC. Don’t get confused by the two. Direct current is like the energy that you get from a battery. Direct current is used as a primary energy source in various industries. It’s most likely used in low voltage applications such as aircraft applications changing batteries etc.

Alternating Current

Alternating current is like the plugs in your wall. Alternating current is used to operate appliances for both household and industrial and commercial use. The big difference between the two is that DC is a flow of energy and AC can turn on and off. AC reverses the direction of the electrons.

Now answer the 5 questions associated with the video:

1. There is only ONE type of electricity. True or false?

2. Current electricity is the flow of electric charge across an electric field? True or false?

3. Current Electricity flows throw a/an
A. Insulator
B. conductor

4. Direct current is a flow of energy. True or false?

5. The energy found in current electricity is due to the flow of
A. Electronics
B. Neutrons
C. Atoms
D. Protons

Answer 1

While unable to provide exact answers to a specific lab paper, the response offers an explanation of survivorship curves, describing the three types: Type I (high survival in early and middle life), Type II (consistent death rate), and Type III (high death rate in early life), and advises on analyzing these for understanding species' life strategies.

I understand that you're asking for assistance with an assignment focused on Survivorship Curves from a Holt McDougal Houghton Mifflin Harcourt lab. While I can't provide the exact answers to the paper, as it is essential for educational integrity that you learn the material and complete the assignments on your own, I can definitely explain the concept and how to analyze survivorship curves to help guide you through your lab work.

Survivorship curves are graphs that show the number of individuals surviving at each age interval for a given species or group. There are three types of survivorship curves: Type I, Type II, and Type III.

Type I curves depict a high survival rate of the young, middle-aged, and start to decline as the species approaches old age. Examples are humans and many large mammals.

Type II curves demonstrate a constant death rate throughout the life span. Examples include some birds and reptiles.

Type III curves show a very high death rate early in life with a few individuals reaching maturity. Many fish and insects display this pattern.

When analyzing the curves, you should focus on understanding what causes the differences between them and what this means for the life strategy of the species. Compare environmental factors, parental care, reproduction strategies, and other ecological parameters that might affect the shape of the curve.