Vocabulary
– verb. The scientific word that means "to get bigger."
"What does it mean to expand?"
– noun. Anything that has mass (weighs at least a little bit) and takes up space (has volume).
"What is matter?"
– noun. The ability to do work or to take action.
"What is energy?"
This button, sometimes called "zero" on a digital scale will reset the mass to zero. The other name for this button is this.
"What is tare?"
When a sample substance goes through a state change, for example, when solid crayons are melted over a candle flame, the mass stays the same because of this law.
"What is the Law of Conservation of Mass?"
– verb. The scientific word that means "to get smaller."
"What does it mean to contract?"
This category of material has only parts are each made of the same type of particle.
"What is a substance?"
An herbivore eats only plant material such as leaves and fruit. A carnivore eats only animal material such as meat and eggs. However, this type of animal regularly eats both.
"What is an omnivore?"
Some scientists hypothesize that an asteroid collided with Earth and created a cloud of dust so enormous that it blocked out the sunlight, and the lack of sunlight caused several species' extinction, most notably this type of animal.
"What are dinosaurs?"
Some signs of this phenomenon include formation of a gas, formation of a solid, change in color, or a change in energy.
"What is a reaction?"
– noun. A process in which one or more substances are changed into new substances.
"What is a reaction?"
This is one of the smallest pieces of matter, such as an atom. Often, it is too small to be seen.
"What is a particle?"
This simple diagram shows a plant to have one source of energy, such as the sun, and to be the energy source of one animal.
"What is a food chain?"
In class, we determined that an old, tarnished penny can shine again if dipped in this solution.
"What is salt in vinegar?"
A limit, such as on an experiment or on a design, that keeps certain things from happening
"What is a constraint?"
– noun. A pretend version of something that scientists use when the real thing is too big, too small, or too complicated to work with.
"What is a model?"
A trait or characteristic--such as hardness, reflectivity, electrical conductivity, solubility, or density--that consistently describes a substance are called this.
"What is a property?"
"What is a food web?"
When making a bar graph, the graph needs a title, labels for its x axis and y axis, and numbers that appear in even increments called this.
"What is a scale?"
The properties that a design, a solution, or a material should have
"What are criteria?"
– as a noun: A test used to discover new information about a question.
– as a verb: To carry out a test with the purpose of discovering new information about a question.
"What is experiment?"
In class, we have seen that salt can be added to vinegar, but the salt does not disappear. Sugar can be added to tea, but we know that the sugar doesn't disappear because the tea tastes sweeter. Instead, the salt and the sugar did this.
"What is dissolved?"
One arrow in a food chain or a food web points from sunlight to grass. The next arrow points from grass to rabbit. Another arrow points from rabbit to snake. Another arrow points from snake to hawk. The arrows are pointing where the matter travels, also known as this.
"What is matter flow?"
When engineers and architects design an apartment building, they must consider which materials, such as wood or concrete, are best for their project. To make their decision, they compare these traits of wood and concrete.
"What are properties?"
Some examples of this phenomenon include evaporation, condensation, melting, and freezing.
"What is a state change?"