WorksheetsSTAAR Review Science
Total questions: 25
Worksheet time: 25mins
A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown below.
Which two atoms are of elements in the same group in the periodic table?
Atom 1 and Atom 2
Atom 1 and Atom 4
Atom 2 and Atom 3
Atom 3 and Atom 4
The scientist spilled a few drops of dilute hydrochloric acid (HCl) on a lab table. For safety purposes, the scientist sprinkled some baking soda (NaCO3) onto the spill. Which observation would provide the best evidence that a chemical reaction occurred?
The baking soda and hydrochloric acid combined, and bubbles formed.
The baking soda absorbed the hydrochloric acid.
Some of the baking soda dissolved in the hydrochloric acid.
The hydrochloric acid evaporated, leaving only the baking soda.
Many processes occur in the digestive system. Which process is best classified as a physical change?
Saliva converting starch molecules in crackers to simple sugars
Digestive enzymes breaking down proteins into smaller fragments
Bacteria converting lactose into simple sugars in the intestines
Teeth grinding an almond into smaller pieces in the mouth
Which of the following best describes an electron?
It has no charge and about the same mass as a proton
It has a negative charge and much less mass than a proton
It has a positive charge and much more mass than a neutron
It has a negative charge and about the same mass as a neutron
What is the process by which plants release water vapor into the air through their leaves?
Condensation
Transpiration
Evaporation
Precipitation
What is the primary function of the chloroplasts in plant cells?
To break down sugar molecules to release energy
To store water and nutrients
To capture light energy and convert it into chemical energy
To control the entry and exit of substances in and out of the cell
What is the term for the amount of matter in an object?
Weight
Density
Mass
Volume
Which of the following is NOT a renewable resource?
Solar energy
Wind energy
Coal
Hydroelectric power
Which of the following is a chemical change?
Dissolving salt in water
Boiling water
Burning wood
Melting ice
What type of symbiotic relationship benefits one organism without harming the other?
Mutualism
Commensalism
Parasitism
Predation
What is the term for the movement of particles from an area of higher concentration to an area of lower concentration?
Osmosis
Diffusion
Active transport
Endocytosis
Which of Newton's laws states that the net force on an object is equal to the objects mass multiplied by its acceleration and it takes more force to move more mass?
Law of Inertia
Law of Force and Acceleration
Law of Action-Reaction
Law of Movement
The diagram below shows four positions in Earth's orbit around the sun.
The Northern Hemisphere experiences the beginning of spring when Earth is in-
Position 1
Position 2
Position 3
Position 4
Which of these locations on Earth experiences the least change in the number of daylight hours throughout the year?
Equator
North Pole
Tropic of Cancer
Tropic of Capricorn
A Hertzsprung-Russell diagram is shown below.
Based on this diagram, which type of stars would belong to spectral class M and have the highest luminosity?
Main-sequence stars
Giants
White dwarfs
Supergiants
The diagram below shows a model of the movement of two tectonic plates. When the plates collide, one plate often moves below the other plate.
The rising magma that can result from this type of plate movement may produce-
fossil layers
volcanic islands
deep-sea sediment
seafloor spreading
The points labeled W and Y on the topographic map below show the campsites of two families. Each family hiked to the elevation on the map marked X. The arrows show the paths taken by both families.
What was the change in elevation, to the nearest ten meters, for the family that took the steepest path to Point X?
10
20
60
120
Gradual and orderly process of change in an ecosystem until a stable community is established.
Ecological Succession
Biodiversity
Adaptation
Competition
Why might an organism have more than one arrow coming from them in a food web?
More than one organism may eat them.
They may eat more than one other organism.
This organism gets its energy from multiple sources.
They have no resources available to them.
a body system that controls growth and homeostasis by secreting hormones from glands.
skeletal system
nervous system
endocrine sytem
integumentary system
___________ is the SI(Standard) unit for force.
Force
Newton
Kilogram
Joule
What is the primary gas found in Earth's atmosphere?
Nitrogen
Oxygen
Carbon Dioxide
Hydrogen
Which process in the water cycle involves water vapor cooling and changing into liquid droplets?
Evaporation
Condensation
Precipitation
Transpiration
What is the chemical formula for table salt?
NaCl
KCl
CaCO3
MgSO4
Which of the following best describes the function of mitochondria in cells?
To store genetic information
To produce energy in the form of ATP
To synthesize proteins
To control cell division
