Ohio 5th Grade Science OST Practice Test

These questions are part of the practice quiz. Start practicing

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