Our solar system formed from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. How old is the solar system?

Which of the following conditions regarding the positions of the earth, moon and the sun could possibly result in a solar eclipse?

In the Atlantic region, a storm is called

Clouds that yield prolonged periods of light to moderate precipitation are

In the Atlantic Region, when the wind speed of a weather disturbance reaches 120 km/h. What will be its classification?

What is the hottest planet in the solar system?

With a telescope, Galileo was able to view the universe in a new way. He made many discoveries that supported the Copernican theory, except

When it is summer in USA, in the Australia it is

Weathering are processes that decompose rocks and convert them to loose gravel, sand, clay and soil. Which of the following shows a certain rock undergoes mechanical weathering?

This is the time interval from one noon to the next, about 24 hours.

Which of the following statements is true about a land breeze?

The form of precipitation that is generally in liquid form.

Acid rain, the kind that causes environmental problems, is caused primarily by.

In Modern Astronomy, who discovered that the orbit is not a perfect circle but is slightly elliptical. He realized that the optical speed of Mars varies in predictable way: Mars speed up as it approaches the Sun and slows down as it moves away.

Which of the following contains the greatest volume of water on earth?

In which layer of the atmosphere is the ultraviolet radiation trapped?

Which of the following instruments determines the atmospheric relative humidity

Latent heat, released as water vapor condenses, can provide the energy needed to fuel.

The warmest day of year throughout much of the Northern Hemisphere is usually closest to

This is the time it takes for the moon to complete its phases

Which would most likely occur during the formation of granite and basalt?

The salinity of water tends to be greater in regions where

The global winds that blow from east to west across tropical latitudes from the equator to approximately 30 degrees latitude are the.

In the water cycle, which process is responsible for getting water into the atmosphere?

Which of the following is not evidence of the Big Bang Theory?

In summer, we see the sun rise early and set late, why?

What is the Coriolis effect?

The era known as the "age of dinosaurs" is the

What do you call the phenomenon wherein there is a marked increase in the earth's surface temperature associated with the radiation being trapped by its atmosphere?

The gas, found in both the troposhere and stratosphere, that is a pollutant in the former and vital to the biosphere in the latter is.

When the temperature and dew point are very close, the relative humidity is

What best describes the greenhouse effect?

What is the densest point in the universe, where the gravitational pull is so strong that not even light can escape?

What is the shape of the Andromeda Galaxy which has a nuclear bulge that has outward parts?

Ice pellet that melted due to warm air but still land on the ground as a solid?

Which of the following is LEAST considered in discovering a new exoplanetary system?

During periods of increased global temperatures, which of the following is most likely to occur?

Which statement on intensive farming or agriculture is CORRECT?

Orchid in the tree, birds build's nest on trees, etc. are an example of

Which of the following is from largest to smallest?

Coral reefs, deserts and forests are natural ecosystems, what do you call an aquarium, pond, zoo?

What is a line where a body rotates and divides into 2 equal parts?

The process which is NOT a type of mechanical disintegration is

Author of the book "An Inconvenient Truth".

Mosquitoes, ticks and lice suck blood from other organisms because they are

Organisms such as vulture and bacteria that get their food from decaying plants and dead animals are described as

Which of the following is correct?

What term best describes the relationships between different organisms in a food web?

What is the primary reasons for the deflection of wind at the North and South?

What process in primitive plants is responsible for the abundance of oxygen in Earth's atmosphere?

What is the harmful component of sunlight that can cause various health issues, including skin damage and cancer?

What is the temperature of Mercury when it's nearest the Sun?

Which phenomenon can have a negative impact on mollusk populations and may result in shellfish poisoning?

Plants are eaten by animals. These animals are considered as

How are the relationships between organisms typically represented in a food chain?

In general, the brightest star in a given constellation is designated as

The sidereal day is determined by the Earth's rotation with respect to the.

Only people in the Moon's umbral shadow can see a _____ eclipse.

In an annular eclipse,

The 26,000 year cycle that changes the poles and equinoxes is called

The apparent annual path the Sun takes through the sky is called

The mean distance between the Earth and Sun is called the

The "guest star" observed by the Chinese in 1054 is now known to have been a

According to Newton's laws, the planets orbit the Sun due to

From full moon to third quarter moon takes about how many weeks?

Why do people feel warmer just before it rains?

Wind always blows from area of

Cause of earth's albedo