TExES Core Subjects EC-6 Practice exam science

Which of the following substances can occur naturally on Earth in the solid state?

water

Which of the following statements about sound is true?

Sound can be modeled as a wave

Which of the following statements correctly compares the mass of a puddle of water to that of the water vapor after the puddle evaporates?

The puddle of water has a mass equal to that of the water vapor since the water has only changed phases

Which TWO of the following are primary functions of the mammalian skeleton?

Supporting body mass, protecting internal organ

Which of the following is most responsible for the development of different domesticated dog breeds

The artificial selection of dogs that have desirable traits

Which of the following ecosystems ( ) forms the base of a food chain?

Of the following, which is thought to be most responsible for the warming of Earth's atmosphere since the late 1800's?

Increasing carbon dioxide emissions ( greenhouse gases)

Of the following conditions, which are best for forming dew on grass?

High relative humidity, falling temperatures

An air mass that originates over the Gulf of Mexico, or another large body of water that is close to the equator, is most likely to be

Warm and moist

Of the following, which best represents for the phases of the moon as seen from the Earth?

the motion of the moon around the earth

Which of the following will best represent data showing the average monthly rainfall amounts for two cities over the course of a year?

A bar graph

Which of the following scientists provided support for Copernicus' theory that Earth orbits the Sun?

Galileo Galilei

Of the following, which is most effective at engaging students in scientific inquiry?

suggesting that students explore a solution to a problem that's relevant to everyday life

force of magnitude to move a box up/ Which compares F-ramp to F-ling

F-ramp< F-lift

Of the following, which describes a chemical reaction?

The production of gas by yeast cells during bread making

Which of the following characteristics is most likely to distinguish an organism as a member of the class Insecta?

Number or pair of legs

A population of mice, with both dark and light colored individuals, lived in an area of light-colored sand. Development in the area has displaced the population to an area of dark-colored rock. Which of the following is most likely to occur to the displaced population in the new environment?

The proportion of light-colored mice will decrease due to increased predation

The deforestation of land along a river will most likely result in:

An increase in the rate of soil erosion into the river (plant roots help hold soil in place)

The majority of Earth's nitrogen is found in

The atmosphere

Which Three of the following are very different for the sun and the moon

Size, mass, density

Which of the following pieces of safety equipment are most important to have when conducting an investigation that uses glassware?

goggles

Which of the following student activities will most effectively help students to think critically about the role of plants in an ecosystem?

Designing a functioning terrarium that includes plants and animals

Which of the following is most effective as part of a program to promote health in the United States?

Modifying lifestyle to increase aerobic activities

Of the following, which is a widely accepted explanation that is supported by a large body of observational and experimental evidence?

theory

Of the following student activities, incorporating which will most effectively help beginning-level English-language learners' conceptual understanding during an inquiry about organisms and their environment

Observing animals in a near by natural area

Which of the following activities is most effective when assessing student' abilities to use science process skills?

Students designing and implementing hands-on-tasks to find a solution to a problem

Which of the following best predicts what will happen when two objects of the same shape and volume, but different masses, are dropped from shoulder height at the same time? (Assume air resistance is negligible)

The objects will reach the ground at the same time because their accelerations due to gravity are the same.

Of the following substances, which is the best conductor of electricity?

Aluminum

Which of the following types of energy is stored in a battery?

chemical

Which of the following types of energy is used by plants and converted to chemical energy as a result of photosynthesis

light

Which of the following is the most important function of stomata, the small openings found primarily on the surfaces of plant leaves?

Allowing gases to be exchange between the plant and the atmosphere

Which change in DNA can be passed to offspring?

sperm

In a study on the climbing ability of lizards in a particular habitat, it was found that members of a lizard species with longer legs were better able to climb and survive than members of a lizard species with shorter legs. In this instance, the longer legs are best considered which of the following?

An adaptation

A decrease in the population of a producer will have the most direct immediate effect on which of the following types of organisms in a food chain?

A primary consumer

Of the following, which is most likely the result of plate tectonics?

An active volcano

Which of the following types of rocks are formed under conditions of intense heat and pressure but not enough heat to melt the rock material

Metamorphic

Which of the following lists of equipment is most appropriate for density investigation?

Graduated cylinder, overflow container balance beam.

Which of the following best describes the value of having students identify how they may have deviated from an experiment procedure when repeated trials produce different results?

The task helps students to recognize possible sources of error

Because trees can be continuously planted and grown to replace trees that are harvested, they are typically classified as which of the following types of resources?

Renewable

Which of the following statements about birds most effectively relates structure to function?

Birds are equipped with lightweight bones for flight

Of the following student activities which would be most useful for assessing student understanding about the formation of the Grand Canyon?

Explaining their ordering of a series of illustrations of the Grand Canyon at different times during its geologic history

Which of the following student activities will most effectively help students overcome their misconceptions about how clouds form?

Discussing with the teacher how a cloud is formed when the teacher uses a partially filled jar of hot water, hair spray, and a tray of ice cues to create a cloud in a jar

Which of the following is the ultimate source of energy that drives weather on Earth?

sun

Which of the following best represents the positions of Earth, the Moon, and the Sun during a full moon?

Directly between the sun and the moon