Learn about an energy pyramid and how the transfer of energy is demonstrated. A trophic pyramid shows where most of the energy in an ecosystem can be found. Each level is called a trophic level and as you move up trophic levels 90% of the energy is lost.

# Trophic Level Pyramid

Sunday, October 6, 2019

Learn about an energy pyramid and how the transfer of energy is demonstrated. A trophic pyramid shows where most of the energy in an ecosystem can be found. Each level is called a trophic level and as you move up trophic levels 90% of the energy is lost.

# Tides Spring and Neap

Tuesday, October 1, 2019

What causes tides?. Tides are the rise and fall of sea levels caused by three items, the gravitational force of the Moon the Sun and the rotation of the earth. So let’s take a look and see how these three items cause tides.

Gravity is the force of attraction between two objects. Anything that has mass also has gravity. Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their gravitational pull is. Although the moon is much smaller than the Sun the moon's gravity has a much more pronounced effect on the Earth's ocean because it is closer than the Sun.

On the side of the earth that's facing the moon, the pull of gravity causes oceans to bulge outward due to the gravitational pull of the moon.

On the other side of the earth away from the moon, the gravitational attraction of the moon is less because it is farther away. Here, inertia exceeds the gravitational force, and the water tries to keep going in a straight line, moving away from the Earth due to centrifugal force, also forming a bulge.

The Earth rotates on its axis so this bulge, which is called the tidal bulge. is constantly changing location. The tidal bulge changes as the moon revolve around the earth. Where the Bulge is bigger it's high tide, and where the bulge is smallest,it's low tide.

The tidal range is the height difference between high tide and low tide. The world's largest tidal range of 16.3 meters and occurs in the Bay of Fundy, in Canada.

Most places get two high tides and two low tides each day. If you are on the part of the Earth-facing the moon you are at high tide, 6 hours later you will be at low tide, 6 hours later you will be back at high tide, and then 6 hours later you are back at low tide, and finally after 6 more hours you are back at high tide.

Approximately twice a month around the new moon and full moon when

the Sun Moon and Earth form a line the tidal force is at

its maximum and the tidal range is at its maximum this is called Spring

Tides. When the moon is at first quarter or third quarter the Sun and Moon are

separated by 90 degrees and the solar tidal force cancels the moon's tidal

force and the tidal range is at its minimum and these tides are called neap tides.

# Trophic Level Pyramid

Thursday, September 26, 2019

Learn about an energy pyramid and how the transfer of energy is demonstrated. A trophic pyramid shows where most of the energy in an ecosystem can be found.

Each level is called a trophic level and as you move up trophic levels 90% of the energy is lost.

# What makes a mammal a mammal?

My dog is considered a mammal, however, so is a dolphin and an elephant.

In this short video, I answer the question, " what makes a mammal a mammal?

There are over 4000 different species of mammals.

Mammals have several common traits.

- A backbone,
- Mammals are endothermic,
- A unique jaw shape,
- Glands that allow mammals to sweat and feed their offspring milk.

# GCF of 24 and 40

Tuesday, September 10, 2019

How to find the GCF of 24 and 40.

I like to use a factor to find the GCF of 40 and 24.

The GCF is the largest number that divides evenly into two or more numbers.

After finding the prime numbers you just multiply the pairs of prime numbers.

24 = 2 2 2 3

40 = 2 2 2 5

Multiply the pairs of prime numbers.

2 x 2 x 2 = 8

The GCF of 24 and 40 = 8

# GCF of 30 and 45

How to find the GCF of 30 and 45.

I like to use a factor to find the GCF of 45 and 30.

The GCF is the largest number that divides evenly into two or more numbers.

After finding the prime numbers you just multiply the pairs of prime numbers.

30 = 2 3 5

45 = 3 5 3

Multiply the pairs of prime numbers.

3 x 5 = 15

The GCF of 30 and 45 = 15

# Multiples of 24

Friday, August 23, 2019

The multiples of 24 are as follows,

24, 48, 72, 96, 120, 144,168, 192, 216, 240

264, 288,312,336,360, 384, 408, 432, 456, 480

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