Nature of Science/Earth and Space
This is a personal belief or feeling that cannot be proven true or false by evidence, unlike a verified observation.
What is an opinion?
This physical property describes how easily a mineral can be scratched, often measured on the Mohs scale
What is hardness?
Unlike a liquid, this state of matter has a definite shape and a definite volume.
What is a solid?
This muscular organ is responsible for pumping blood throughout the entire body to carry oxygen to your cells.
What is the heart?
Because animals and humans cannot produce their own food energy, they must obtain it by eating other organisms, leading to their classification into these three specific consumer groups
What are herbivores, carnivores, and omnivores?
In a controlled experiment, this is the name for the single factor that is changed by the scientist to keep the investigation "fair"
What is the test variable (or independent variable)?
This is the only one of the three rock categories that can contain fossils, because it is formed by layers of materials being squeezed together rather than by extreme heat or melting
What is sedimentary rock?
This state of matter has a definite volume but takes the shape of its container
What is a liquid?
In complete metamorphosis, this is the stage where the insect is "at rest" while its body undergoes a total transformation
What is the pupa?
Plants are uniquely classified as producers because they possess the ability to manufacture their own food energy using these three specific non-living "ingredients"
What are sunlight, air (carbon dioxide), and water?
Scientists use this part of an experiment as a standard for comparison to see if the variable being tested actually caused a change
What is a control group?
These are natural materials, such as sunlight, wind, and water, that can be replaced within a human lifetime
What are renewable resources?
Scientists use a pan balance or a triple beam balance to measure this property, which is the amount of matter in an object
What is mass?
In a food chain diagram, this symbol always points toward the organism receiving the energy
What is the arrow?
When classifying vertebrates into their major groups, a scientist would identify a mammal by its hair or fur and its ability to produce milk for its young, while a reptile is distinguished from an amphibian by its dry, scaly skin and the fact that it typically lays this specific type of egg
What are leathery eggs?
This is the only star located in our Solar System.
What is the Sun?
This specific type of physical weathering occurs when plant roots grow into cracks in a rock and force it to split apart
What is root wedging?
Breaking a solid into smaller pieces speeds up dissolving because it increases this factor.
What is surface area (or particle size)?
a region's climate (its long-term patterns of temperature and precipitation) is primarily determined by its latitude, its elevation, and its proximity to these features
What are bodies of water?
animal skin serves a vital biological function that is functionally identical to the role played by this specific plant structure
What is bark (or the outer covering/epidermis)?
This movement involves the Earth traveling in a path around the Sun, which takes 365 days or one year to complete.
What is revolution?
This part of the water cycle occurs when liquid water turns into water vapor (a gas) because of heat energy from the Sun
What is evaporation?
Objects that transfer heat energy easily, such as metal spoons or copper wires, are known by this name.
What are conductors?
Planting native trees to restore a forest or picking up trash on a beach are examples of this type of environmental impact.
What is a positive human impact?
To keep the human body healthy and free of toxins, these two bean-shaped organs work together to filter waste and extra water from the blood to create urine
What are the kidneys?
These four planets—Mercury, Venus, Earth, and Mars—are known as rocky planets because they are small, dense, and have solid surfaces
What are the inner planets?
This nonrenewable resource is a soft rock mined in Florida and is frequently used to make roads and buildings
What is limestone?
A lamp plugged into a wall outlet is an example of electrical energy being transformed into this other form of energy
What is light energy?
To successfully complete its life cycle and create a new generation, a flowering plant must undergo these five specific reproductive processes in a precise sequence, beginning with the transfer of pollen
What are Pollination, Fertilization, Seed Production, Seed Dispersal, and Germination?
In the digestive process, food follows a specific path to be broken down for energy, but it never actually passes through these two organs, which are still vital because they secrete juices that help break down fats and regulate blood sugar
What are the liver and the pancreas?