It is a large system of rotating ocean currents.

(a)  

Main factor affecting climate

(a)  

Changes frequently within a short period of time

(a)  

Average weather conditions of a place taken over a long time

(a)  

Factors affecting climate

Prevents heat from escaping the earth thus making earth's temperature higher

(a)  

Warms the earth as its energy is absorbed by the atmosphere

(a)  

It is one of the main sources of carbon dioxide emission

(a)  

A long term change in the average weather patterns that have come to define earth's local regional and global climates

(a)  

It is an abnormal and lengthy warming in the eastern part of the pacific ocean

(a)  

Natural phenomenon occurs at regular intervals of 2 to 7 years and last for 9 months or 2 years at most.

This happens when the upwelling of colder water is blocked by the large quantities of warm surface water

(a)  

Opposite of el niño triggered by the cooling of the eastern part of the pacific ocean that it is why sometimes called cold pacific

(a)  

When it reaches the land mass such as philippines precipitation is experienced

(a)  

Three main greenhouse gases in the atmosphere are

(a)  

Particularly significant because it's amount in the atmosphere can change depending on temperature this change can then affect the amount of energy trapped in the atmosphere

(a)  

A long term heating of earth's surface observed since the pre-industrial period due to human activities

(a)  

Effects of global warming?

Most widely recognized astronomical objects and represent the most fundamental building blocks of galaxies

(a)  

Born within the clouds of dust and scattered throughout most galaxies a familiar example of such as dust cloud is the orion nebula

(a)  

It is this hot core at the heart of the collapsing cloud that will one day become a star

(a)  

Discovered a small nebula that appeared unexpectedly near the nebula messier 78 and the constellation of orion

(a)  

A star the size of our sun requires about 50 million years to measure from the beginning of the collapse to adulthood

(a)  

Main sequence star spend a wide range of luminosity and colors and can be classified according to those characteristics

(a)  

Also known as the red dwarfs

(a)  

The most massive stars may be 100 or more times for massive than the sun

(a)  

And it's hundreds of thousands of times more energy than the sun but have lifetimes of only a few million years

(a)  

Brightness of the stars as seen from earth depends on two factors which is

(a)  

Refers to the stars brightness as seen from the earth.

depends on how far a star is from the earth

(a)  

The brightness the star would have if all stars were the same standard distance from earth

(a)  

A group of stars forming a recognizable pattern that is traditionally named after its appearance former identified with the mythological figure

Modern astronomers divide the sky into 88 constellations with defined boundaries

(a)  

Commonly known as the north star, is the brightest star in the constellation ursa minor

(a)  

The spinning of the earth around its axis is called

(a)  

The movement of the earth around the sun in a fixed path is called a

(a)  

Revolution creates?

(a)  

Occurs when the earth is closest to the sun

(a)  

Occurs when the earth is far from the sun

(a)  

The duration of days and nights vary in the northern and southern hemispheres this is known as

(a)