Praxis Elementary Education (7001): Science Subtest (7005) latest update with complete verified solutions 2025

Which of the following best describes the primary function of the roots of a plant?

nutrient absorption from the soil

A frozen ice cream bar was left in the sun and melted. Which statement is true regarding the physical properties of the ice cream bar after it melted?

The arrangement of molecules had changed.

The Earth's mantle is mostly made up of which of the following sets of elements?

silicon, magnesium, and oxygen

In which of the following ways can human activities positively influence biodiversity in a given area?

by creating protected areas and wildlife reserves

A wind turbine converts:

kinetic energy into electrical energy.

What is the main function of chlorophyll in plant cells?

capturing sunlight for photosynthesis

Which of the following describes the positioning of Earth's axis relative to the Sun during the autumnal equinox, the first day of fall in the northern hemisphere?

All points on the axis are equally distant from the Sun.

Which of the following correctly describes an endothermic reaction?

surroundings are cooled as the system absorbs heat and chemical bonds are broken

As you ride a train, it passes a stationary warning horn. Which of the following causes you to hear the horn's frequency shift from high to low?

Doppler effect

What is the difference between renewable and nonrenewable resources?

Renewable resources are replenished faster than or at the same rate that they are used. Nonrenewable resources cannot be replenished as fast as they are used.

The first several elements are grouped into eight columns in the periodic table labeled columns I through VIII. Elements in which columns of the periodic table tend to form ionic bonds with each other?

elements in columns I and VII

Which of the following is the name for small pieces of rock and debris moving through the Earth's atmosphere at high speed?

meteors

A scientist performs tests on a rock sample and determines they have a sample of sedimentary rock with a density of 2.82 grams per cubic centimeter. According to the table below, what type of rock is the scientist's sample?

limestone

Which of the following is the genus of the organism with the scientific name Homo sapiens?

Homo

Newton's third law of motion states that for every action there is an equal and opposite reaction. Which of the following is the best example of the application of this law?

An airplane moves in the opposite direction of the air pushed out by its engines.

Which of the following is the best way for Mr. Jocinda to demonstrate the cause of day and night?

Spin a globe in front of a lamp.

Which system controls most of the functions of the body?

nervous system

Which of the following is the best example of a response to an external stimuli?

A plant grows toward the sunlight.

Which of the following is the primary source of energy for cellular respiration?

glucose

Which of the following plants reproduce using spores?

licorice ferns

Alysha pours about 70 mL diluted base from the stock container into a beaker, then measures out 50 mL of this into her graduated cylinder. What should she do with the remainder of the diluted base in her beaker?

pour it into the liquid waste bottle

A population of lizards, some with green coloring and some with brown coloring, is introduced into a field that is mostly dirt. A few generations later, the majority of the lizards have brown coloring. Which of the following best explains this change?

Brown colored lizards are better able to hide from their predators.

Which of the following is true in science?

Science is open to change.

Which of the following depicts the relative arrangement of the Earth, Sun, and Moon when a solar eclipse is observed from the location marked X?

A solar eclipse occurs when the Moon is aligned between the Earth and the Sun and the Moon blocks the view of the Sun.

Which of the following explains why a muscle cell looks and functions differently from a nerve cell in the same person?

differences in gene expression

A bowling ball rolls down the alley lane toward the pins. Which distance vs. time graph best represents the ball rolling at a constant speed after being released? The origin represents the foul line where the ball was released.

The distance from the origin increases with time, showing that the ball is rolling away from its starting position. The slope on a distance vs. time graph represents the speed. The straight-line slope shows that the speed is constant.

Which of the following is the time interval for one complete cycle of periodic motion?

the period

Sally notices that there has often been dew on the ground the past four mornings. Sally asks her science teacher why dew forms on the ground. Which of the following would be the best response by Sally's science teacher?

As the temperature drops during the night, the air cannot hold as much water, and the water vapor forms into liquid water on the ground.

How do a population and a community differ?

A population is a group of only one species.

What is one significant advantage for the supply chain of crops that are genetically modified to have enhanced shelf-lives?

They reduce bruising, decay, and waste, resulting in cost savings and maintaining product freshness for longer periods.

One of the main purposes of the circulatory system is to:

deliver nutrients to cells within the body.

The Earth's outer layer is divided into sections called plates. These plates essentially float around on the mantle of the Earth. If two continent boundaries collide with one another, Earth's crust is pushed together. Which of the following best describes the result of the collision?

mountains

Red flowers are dominant over white flowers in roses. A heterozygous red flowering rose is mated with a purebred, white colored rose. What percentage of their offspring will have the genotype rr?

50%

Three seismometers are spread around the Earth. After an earthquake, what might scientists use these to locate?

the epicenter

Scientists find well-preserved fern fossils in Arctic ice cores. Which of the following conclusions is best supported by the scientists' findings?

The Arctic region once had a much warmer climate.

n which of the following types of bonds are electrons shared between 2 atoms?

covalent

Which of the following describes the process of sublimation?

A pure solid changes directly into a gas.

Which of the following best describes the primary function of the human skeleton system?

supporting the structure of the body

The layer of the atmosphere right above the troposphere is called the

stratosphere

Which of the following is not a reason that populations change over time?

individual habits

Which of the following characteristics always describes a gas?

Select all answers that apply.

changing volume, can be compressed (squashed)

Which of the following elements make up approximately 98% of the Sun?

hydrogen and helium

What coefficient is needed on H3PO4 to balance the following chemical equation? Ca3(PO4)2 + H3PO4 → Ca(H2PO4)2

4

Why does a red dress appear red when white light shines on it?

The pigments in the red dress reflect red light and absorb most other colors.

Which of the following adaptations would be beneficial in a coniferous forest biome?

Snowshoe hares shedding their brown summer coats for white winter coats.

What is the name of the female reproductive organ where a fertilized egg implants and grows into a fetus during pregnancy?

uterus

A change in which of the following subatomic particles alters the charge of an ion?

electrons

What is the term for the initial stage of a plant's life cycle, when a seed starts to develop into a seedling?

germination

Which of the following animals is categorized correctly?

scorpion: invertebrate, arachnid

The two strands in a section of DNA are complementary. If one DNA segment is listed as CGGATGGCTT, which of the following would be the complementary strand?

GCCTACCGAA