Matter & Reactions
A change that only affects the form or state of matter but does not create a new substance.
Physical change
Speed is calculated using what formula?
speed= distance/time
At what type of plate boundary does new ocean crust form as plates move apart, creating mid-ocean ridges?
Divergent
The variety of organisms living in an ecosystem is called what?
Biodiversity
Which body system is responsible for moving oxygen and nutrients through the body using blood?
Circulatory system
A nail sits outside and begins to rust over time.
Is this a physical change or chemical change?
Chemical change
An object travels 500 meters in 12 seconds. What is its speed?
41.6 m/s
At what type of plate boundary do earthquakes usually occur?
transform
The series of changes that occur on surfaces where no soil or organisms exist
Primary succession
Which body system allows the body to take in oxygen and remove carbon dioxide?
Respiratory
Given the compound 2H₂O, how many hydrogen atoms are present in 3 molecules of this compound
12
The law of inertia states?
An object in motion will stay in motion and object will stay at rest unless acted upon by an outside force
At what type of plate boundary do two continental plates collide, forming large mountain ranges?
convergent
Succession that occurs when living organisms already exists after a disturbance.
Secondary succession
What type of reproduction involves one parent and produces genetically identical offspring?
Asexual
A student mixes 10 g of baking soda with an unknown value of vinegar in a closed container.
After the reaction, the total mass of the products is measured to be 25 g.
if mass is conserved in this reaction what is the volume of the vinegar?
15
Two objects are pushed with the same force.
One object has a mass of 5 kg and the other has a mass of 10 kg.
Which object will have the greater acceleration and which Newton’s Law explains this?
he 5 kg object will accelerate more.
Because Newton’s Second Law states that acceleration depends on force and mass.
Convergent
In an energy pyramid, what happens to energy as it moves up trophic levels?
Decrease
What type of reproduction involves two parents and results in genetic variation in offspring?
Sexual
Which process is an example of a chemical reaction that rearranges atoms while conserving mass?
Photosynthesis
A student pushes a box with a force of 40 N.
The box has a mass of 8 kg.
What is the acceleration of the box?
Which Newton’s Law of Motion explains this relationship?
a = 5 m/s²
Newton’s Second Law of Motion explains the relationship between force, mass, and acceleration.
At what type of plate boundary does seafloor spreading occur, helping create new ocean basins?
divergent
what is the first species to grow back after primary succession called? and give an example
Pioneer species
lichen, algae, fungi, moss
Variations in traits that help an organism survive and reproduce in its environment are called what?
adaptations