A feeding relationship that proceeds from algae to fish, then to a fisherman, then to a shark is

Small fish when travelling look for protection to whales from their predators such as sharks and other big fish. What relationship does this show?

Air pollution becomes a serious problem when weather conditions do not allow the polluted air to be blown away. This happens when warm air exists above the layer of cool air next to the ground.

• Aerosols are ecologically harmful because:

Which of the following statements is true about chemical weathering?

Which of the following rocks you might find a fossil?

In the Mohs' scale of hardness, talc is the softest while the hardest mineral is

Which of the following does not describe extrusive igneous rock formation?

The first step in the identification of a mineral is to observe its appearance and visible structure. Below are some physical characteristics of minerals except for:

The theory that proposes that there is originally only one large continent in the earth then is called:

Tectonic plates can be described as:

In 1909, a geophysicist discovered that 6 miles (9 km) below the ocean floor, earthquake waves suddenly increases in velocity as they enter the mantle. This rock layer forming a boundary between the earth's crust and mantle is referred to as the:

If the moon were positioned twice as far from the Earth as it is now, , gravitational attraction would be

Which of the following does not characterize a low pressure system?

The gas envelope of the earth is:

Which of the following filters off the harmful ultraviolet rays coming from the sun?

The phenomenon land breeze is best explained by:

The level below of which the surface rocks are saturated with water.

Basins that have become partly or completely filled with fresh and decayed vegetation often refer to the drying up stage of a water system.

Matter is anything

The statements below show different properties of matter. Which shows the physical property of matter?

Which of the following does not involve physical change?

Which of the following is an example of chemical change?

All of the following are examples of chemical change except:

A process which involves a change of a solid to gas without passing the liquid phase.

The degree at which rocks and soil allow water to penetrate and pass through them is called:

It is the movement of water molecules across a differentially permeable membrane response to a concentration gradient.

Silver is used in certain electrical components because it can easily be drawn out into wires. What property of silver is being described?

An element that is lustrous, malleable, ductile, and a good conductor of heat and electricity.

Energy can neither be created nor destroyed; it can only be changed from one form to another. This principle is known as:

The energy coming from the sun is the result of:

Tyndall effect is a phenomenon which involves diffusion of light. This is observable in:

Solving problems in an orderly and systematic approach is called:

You were asked by your teacher to measure the volume of a rock, what method will you use?

A covered bottle filled with liquid water usually break when placed in the freezer overnight. What can you make regarding water and ice?

Why do clothes dry faster when humidity is low?

During the day, a body of water is cooler than the ground. At night, the same body of water is warmer than the ground. What can be concluded from this?

An astronaut with a mass of 60 kg on Earth was sent to Mars which has a gravitational pull less than that of the Earth. What will be the astronaut's mass on Mars!

An example of a rock whose minerals have been crushed into thin sheets or bands is:

Which of the following is an igneous rock?

Which of the following is a metamorphic rock?

The mineral halite is:

47. Which of the following is the name of the partly melted rock layer on which the plates move?

Cirrus clouds are:

Certain substances are classified as water pollutants, others as air pollutants and still others as land pollutants. Which of the following pollutes all three parts of our environment?

The Greenhouse Effect is caused primarily by which of the following processes?

During which period, in the earth's history, did most dinosaurs become extinct?

52. The term that describes different crystalline modifications of the same chemical substance.

Molten rock beneath the Earth's crust is called:

The jet-stream lies between which two layers of the earth's atmosphere?

An igneous rock which is commonly black, has a glassy texture, and has a conchoidal fracture.

Which of the following is the most important chemically-active fluid involved in the formation of rocks?

Diamond and graphite are polymorphs of which of the following elements?

The most common mineral found in igneous rock is:

Which of the following names is given to the supercontinent thought to have existed in the Cambrian period?

Which of the following is the oldest period of time lasting from the beginnings of the earth to approximately 570 million years ago?

Most cave deposits form from which of the following minerals?

Which element in chlorofluorocarbons (CFCs) is responsible for destroying the Earth's ozone layer?

The Coriolis effect is responsible for which atmospheric phenomenon?

Which of the following causes the oblate spheroid shape of the earth?

Which of the following is true of an earthquake's epicenter and focus?

A rock composed of cemented sand and gravel is:

The longest era was the:

The oldest rocks that contain abundant fossils are:

The core of the earth is thought to be composed of which of the following?

In geological studies, the Mohorovicic Discontinuity, commonly called the Moho, is the boundary between the:

A device used to measure the amount of moisture in the atmosphere is called a:

In the early 17th century, based on his observations with a telescope, Galileo Galilei attacked a belief espoused by the church. That belief was:

Fool's gold" is a common name for this mineral:

What form of radiation most closely resembles X-rays?

In the Tyndall Effect, the intensity of scattered radiation is inversely proportional to the fourth power of the wavelength. Which one of the following colors of light would exhibit the most intense Tyndall scattering?

Different organs compose a:

What differentiates an animal cell from a plant cell?

Mammals are different from other animals because:

The process by which plants use energy coming from sunlight to produce their own food.

The number of protons in an atom is referred as the:

The part of the atom involved in atomic bonding.

Two or more atoms physically joined together with only one visible phase is called:

A process where minerals combine with oxygen to form a new substance is called:

The scale that measures the magnitude of an earthquake based on its seismic waves:

This is caused by earthquakes or volcanic eruptions on the ocean floor:

Based on the diagram, which substance is denser than water?

Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities?

Which of the following minerals is noted for its one perfect cleavage?

Which of these pairs of minerals are always found in granites?