Ohio 5th Grade Science OST Practice Test

These questions are part of the practice quiz. Start practicing

• Variation provides differences in a population mainly due to which of the following?
• In energy flow, which is the initial energy source for most ecosystems?
• Any change in speed or direction requires a __________.
• If a forest receives less sunlight, what is likely to happen?
• Which statement is NOT a function of a plant's roots?
• This bends white light and separates it into different colors of light.
• In an ecosystem, what energy source do producers primarily use to make their own food?
• Which process describes how plants convert sunlight into chemical energy?
• What best describes a predator-prey relationship in an ecosystem?
• What are the stages of the water cycle?
• Which quantity describes how fast something is moving?
• What role do chloroplasts play in plant cells?
• What explains why the Earth has seasons?
• Which gas increases in the atmosphere as a result of photosynthesis?
• What is the volume of a regular-shaped object if you measure its length, width, and height and multiply?
• What is a hypothesis?
• What are the three main types of rocks?
• Which term describes Earth's tilt on its axis?
• When light hits a smooth, shiny surface and bounces back, this phenomenon is called?
• The light wave could be ______ by the object, in which case its energy is converted to heat. Occurs when light hits the color black.
• Which planets lie outside the asteroid belt?
• Which process moves water from land into the atmosphere as vapor?
• Density is mass per unit volume. How do you determine it?
• What region is located between the orbits of Mars and Jupiter?
• Pluto is classified as what because it does not have a clear orbit?
• This reflects light.
• What is the process by which producers use sunlight to make food?
• Approximately how many days does it take Earth to orbit the Sun?
• How many major planets are in our solar system?
• How does a plant's leaf structure help with photosynthesis?
• How much an object's ______ increases from light hitting it depends on the object's material and angle in which the light strikes its surface.
• Generally the __________ the force acting on an object, the greater the change in motion.
• Which statement correctly describes erosion agents?
• According to the material, increasing the force acting on an object generally causes what to happen to the change in motion?
• In a controlled science experiment, which variables must you keep the same to ensure a fair test?
• How does warmer temperature affect the water cycle?
• What is the scientific method?
• Which statement best describes a physical change?
• What is the relationship between weathering and erosion in shaping landforms?
• Which best defines a biome?
• If a force is applied in the opposite direction of an object's motion, the speed will __________.
• What is the measurement of gravitational force between an object and the Earth?
• The __________ of an object can change by speeding up, slowing down, or changing direction.
• What is the role of producers in a food chain?
• What force explains why planets orbit the Sun and moons orbit planets?
• Which statement best defines friction?
• Why do seeds disperse away from the parent plant?
• What happens to energy as it moves from one trophic level to the next?
• Which term describes an organism that breaks down dead matter to recycle nutrients?
• Which atmospheric layer is closest to Earth and what weather phenomena occur there?
• Which organelle captures light energy for photosynthesis?
• What is inheritance?
• How does variation help a population adapt?
• In which type of symbiotic relationship does one species benefit and the other is unaffected?
• Which of the following is an example of a nonrenewable resource?
• Define habitat and niche.
• Why do stars larger than the Sun appear much smaller in the sky?
• How is a sedimentary rock formed?
• Which term describes the rocky planets closest to the Sun?
• The moon ______ the sun's light.
• Which statement correctly describes a solution?
• Which statement accurately describes climate?
• How does energy move between organisms in a food chain?
• What is the term for a relationship in which both species gain advantages?
• In which of the following is the ultimate source of energy for all ecosystems?
• What do producers transform from the Sun to make food?
• Which term describes rocky bodies that orbit the Sun and are too small to be considered planets?
• Reproduction types: which statement correctly contrasts sexual and asexual reproduction?
• Which organism eats both plants and animals?
• What is the role of producers in an ecosystem's energy flow?
• What are the main stages of the water cycle?
• Which travels faster, light or sound?
• What is the difference between mass and weight?
• What is a mineral?
• Name the planets in order from the Sun.
• If no forces act on an object, the object does not change its motion and moves at a ______ speed in a given direction.
• How is a metamorphic rock formed?
• What is the difference between asexual and sexual reproduction?
• What is conduction?
• Which statement describes inheritance?
• How does photosynthesis affect the atmosphere?
• The bending of a wave.
• What instrument would you use to measure temperature?
• Sound must travel through a ______ or medium to move from one place to another.
• The reflection of sound.
• Distance divided by time equals what?
• Which statement is true about how sound travels?
• What term describes an animal that feeds only on meat?
• How do magnets attract or repel objects?
• What term describes Earth's rotation on its axis, which takes about 24 hours?
• Light travels ______ than sound.
• How do animals get energy in ecosystems?
• What is the role of the sun in weather patterns and the water cycle?
• In which type of symbiotic relationship does one species benefit and the other is harmed?
• Which list contains the four inner planets?
• Which factors can cause erosion by moving rock and soil?
• What is the difference between mass and weight?
• Sedimentary rocks form from which process?
• Which statement best describes friction?
• What are the three states of matter, and how do they change state?
• Which object is known for reflecting light?
• What is the primary source of energy for almost all living organisms in most ecosystems?
• Which statement best describes the difference between heat and temperature?
• Why do scientists use models in science?
• What is the difference between weather and climate?
• What energy changes occur when a ball is dropped from rest and hits the ground?
• How are rocks classified into igneous, sedimentary, and metamorphic rocks?
• If a plant on a windowsill receives bright light for 12 hours a day but the soil has very little water, what factor most limits the plant's growth?
• Which statement describes a homogeneous mixture?
• What is the volume of a 2 cm by 3 cm by 4 cm box?
• Which statement about nutrients in an ecosystem is true?
• How can you determine if an object's motion is increasing, decreasing, or constant speed?
• If an object is not moving and no forces act on it, the object will remain at ______.
• How do weather and climate differ?
• When planning an experiment, which action ensures a fair test?
• Why do scientists repeat experiments?
• What is erosion and how can its effects be slowed?
• Which statement correctly describes renewable and nonrenewable resources, with examples?
• What is diffusion and how does it occur in gases and liquids?
• How many degrees is Earth's axis tilted?
• If two objects experience the same force, the object with greater mass will experience what change in motion?
• Why do scientists use controlled experiments instead of only observing?
• If two objects experience the same force, which will experience a larger change in motion?
• Which sign indicates a chemical change rather than a physical change?
• The more __________ an object has the less influence a given force will have on its motion.
• Which of the following describes an inference?
• Why is the sun considered the primary source of energy for most ecosystems?
• What term describes organisms that rely on other organisms for food?
• What is the purpose of adaptations in living organisms?
• Which term best describes the four planets farthest from the Sun?
• What term describes how fast an object vibrates?
• How does energy transfer in a food web compare to a simple food chain?
• What is the purpose of a hypothesis?
• What is an adaptation?
• Which of the following lists the inner (terrestrial) planets?
• Which is a chemical change?
• Which type of star is the Sun?
• If an object's mass is 200 g and its volume is 100 cm^3, what is its density?
• What is a variable, and how are independent and dependent variables different?
• What are the rocky or metallic bodies that orbit the Sun but are too small to be planets?
• What causes high and low tides on Earth?
• The energy in most ecosystems flows from producers to consumers. Which statement best describes this flow?
• Which statement about tides is true?
• Which statement best describes energy flow in an ecosystem?
• Objects that vibrate quickly produce this type of pitch.
• Which is an example of a physical change?
• Which change would most likely increase the rate of evaporation in the water cycle?
• Why is it important to design fair tests with multiple trials and enough data?
• What term describes organisms that obtain energy by consuming other organisms?
• Why is biodiversity important in ecosystems?
• Which type of rock is most likely to contain fossils?
• What statement correctly describes the difference between an observation and an inference?
• What is a solution?
• Which outcome occurs when light is absorbed by an object and its energy becomes heat?
• Which statement about producers is true?
• What size classification best describes the Sun among stars?
• What kind of event would most likely increase soil erosion?
• How does the position of plants and prey in a habitat affect their survival?
• What is the term for a relationship in which one species benefits and the other is harmed?
• Which statement describes how inheritance works in terms of traits?
• What is the function of chloroplasts in leaf cells?
• In a simple food chain, which organism is typically the producer?
• Which statement about energy transfer in a food web is true?
• What is a habitat and why is it important for an organism?
• Which statement describes a chemical change?
• During photosynthesis, what form of energy is transformed by plants?
• A population in an ecosystem is defined as?
• Which instrument measures atmospheric pressure?
• Sound travels at ______ speeds through different mediums.
• Which statement best describes how weathering and erosion work together to shape landforms?
• In the water cycle, which process turns liquid water into water vapor?
• What variable would you measure when testing plant growth under different light colors?
• Which group breaks down dead matter and returns nutrients to the ecosystem?
• What is a nutrient cycle?
• Which statement describes a physical change?
• What causes the seasons?
• Which statement best describes a physical change?
• What appears when a meteoroid enters Earth's atmosphere from outer space?
• Which process do plants use to make glucose from sunlight, carbon dioxide, and water?
• In an ecosystem, plants are the foundation of the food web and are called what?
• Which are common weather tools and what do they measure?
• What is the main purpose of repeating experiments?
• Objects that vibrate slowly produce this type of pitch.
• This type of relationship occurs when individuals of one species are dependent upon individuals of another species for survival.
• Which instrument measures wind speed?
• How do living organisms interact in ecosystems?
• What role do producers play in an ecosystem?
• If a force is applied in the same direction of an object's motion, the speed will __________.
• What happens to energy as it moves from producers to higher trophic levels in a food chain?
• Decomposers return what to the ecosystem?
• The orbit of planets around the Sun is best described as which shape?
• Which organism is a producer in a simple ecosystem?
• Light travels and maintains its ______ until it interacts with an object or moves from one medium to another.
• When a rolling ball loses energy because of friction, what happens to that energy?
• Why are seeds dispersed after reproduction?
• What is a fair test?
• Which action reduces the impact of human activities on ecosystems?
• What is an inherited trait? Provide an example.
• How do energy pyramids help illustrate energy transfer in ecosystems?
• Which list contains the four outer planets?
• What instrument would you use to measure mass?
• What is the main difference between weathering and erosion?
• Which device is a simple machine?
• If an object's mass remains constant but gravity changes, what happens to its weight?
• When light strikes an object through which it cannot pass, this is formed:
• What causes day and night?
• What causes erosion?
• The bouncing back by a surface of light, heat, or sound without absorbing it.
• Which statement correctly describes force and motion?
• What is the term for a mixture of ices that orbits the Sun but is not part of a planet?
• Which type of symbiotic relationship involves both species benefiting?
• Sunlight is an example of what type of resource?
• What is the closest star to Earth?
• What does energy efficiency mean?
• What term describes Earth's year-long orbit around the Sun?
• What term describes a network of many interconnected food chains?
• In a canyon, if you hear the sound again, what happened?
• Which of the following is a simple machine?
• What is a control in an experiment?
• What is a food chain and how energy flows through it?
• Which of the following is a simple machine?
• Why do magnets attract or repel?
• Which stage of the water cycle involves water falling as rain, snow, or hail?
• When light changes direction at the boundary between two materials, the process is called ______.
• What are decomposers and why are they important?
• Which process changes liquid water into a gas?
• Which object causes light to split into a spectrum of colors?
• Which arrangement describes light bouncing off a surface without absorption?
• In a uniform medium, light travels in a ______.
• Which animal feeds only on plants?
• What role does sunlight play in the carbon cycle?
• How can scientists represent data collected from experiments?
• How do decomposers contribute to an ecosystem?
• Light can travel through some materials, such as glass or water. Light also can travel through empty space, like from the sun to Earth. When light travels from one location to another, it goes in a ______.
• Sound can move through a _______, liquid or gas.
• Which term refers to the gravitational force between an object and Earth?
• In a pond ecosystem, which organisms are most directly responsible for converting energy from sunlight into chemical energy?
• What is a scientific model?
• Which statement describes renewable resources?