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Worksheets

2025 STAAR

Total questions: 80

Worksheet time: 1hrs 20mins

Name
Class
Date
1.
What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
2.
A precipitate is a 
a)
liquid that forms when two solids are reacted
b)
a solid that forms when two liquids are mixed
c)
a gas that forms when vinegar and baking soda react
d)
a change of color in a solution
3.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
4.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
5.
Which of these is NOT a sign that a chemical change has occurred? 
a)
A loss of transparency 
b)
An unexpected color change
c)
A temperature change
d)
The formation of a precipitate
6.
In a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are called what?
a)
Reactants
b)
Products
c)
Atoms
d)
Catalysts
7.

What happens when two forces act in the same direction?

a)

They cancel each other out.

b)

The stronger one prevails.

c)

Their strengths are added.

d)

Their sum divided by two is the total force.

8.

The greater the mass of an object,

a)

the easier the object starts moving.

b)

the greater its inertia.

c)

the more balanced it is.

d)

the more space it takes up.

9.

The force of gravity on a person or object on the surface of a planet is called

a)

mass.

b)

weight.

c)

terminal velocity

d)

free fall.

10.

Forces can be added together only if they are

a)

acting on the same object

b)

unaffected by gravity

c)

balanced forces

d)

substantial

11.

According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail

a)

creates a friction with the hammer.

b)

disappears into the wood.

c)

exerts an equal and opposite force on the hammer.

d)

moves at a constant speed.

12.

The overall force on an object after all the forces are added together is called the

a)

balanced force

b)

unbalanced force

c)

net force

d)

centripetal force

13.

Freshly brewed black coffee

a)

Heterogeneous

b)

Homogeneous

14.
Vinegar
a)
Heterogeneous
b)
Homogeneous
15.
Are made from a combination of 2 or more elements in a constant ratio...
a)
Atome
b)
Mixture
c)
Compounds
d)
Elements
16.
A combination that can be separated by physical processes is a .....
a)
Atom
b)
Compound
c)
Element
d)
Mixture
17.
What is a homogeneous mixture?
a)
a mixture that is the same throughout.
b)
a mixture that is made up of one type of atom.
c)
a mixture that is made up of one type of compound
d)
a mixture that cannot be separated through physical changes
18.
A mixture that is NOT evenly distributed is called ....
a)
Compounded
b)
Homogenous
c)
Heterogenous
d)
Salty
19.

Which system moves body parts?

a)

muscular

b)

skeletal

c)

digestive

d)

respiratory

20.

Which system provides oxygen and removes carbon dioxide?

a)

digestive

b)

muscular

c)

respiratory

d)

nervous

21.

Which system moves body parts?

a)

muscular

b)

skeletal

c)

digestive

d)

respiratory

22.

Which system provides oxygen and removes carbon dioxide?

a)

digestive

b)

muscular

c)

respiratory

d)

nervous

23.

Which system controls all parts of your body and sends/receives messages?

a)

muscular

b)

digestive

c)

circulatory

d)

nervous

24.

Which system carries blood to and from body cells?

a)

muscular

b)

circulatory

c)

skeletal

d)

respiratory

25.

Which system supports the body and protects organs?

a)

skeletal

b)

muscular

c)

respiratory

d)

digestive

26.

Which system provides nutrients to the body?

a)

circulatory

b)

nervous

c)

digestive

d)

skeletal

27.
Your heart is about the size of what other body part?
a)
head
b)
fist
c)
thumb
d)
foot
28.
Bones meet at ---?
a)
joints
b)
organs
c)
tissues
d)
cells
29.
Which system has the brain as the main organ?
a)
skeletal
b)
muscular
c)
nervous
d)
respiratory
30.
What is the tube of nerves that runs through the backbone?
a)
spinal cord
b)
veins
c)
muscles
d)
chambers
31.

Which organ is in the digestive system?

a)

heart

b)

lungs

c)

brain

d)

stomach

32.
Which system is responsible for removing waste?
a)
nervous
b)
digestive
c)
muscular
d)
circulatory
33.
Which organ pumps blood throughout your body?
a)
cell
b)
brain
c)
tissue
d)
heart
34.
My spinal cord helps _________ travel between my brain and the nerves in my body. 
a)
Memories
b)
Blood
c)
Waste
d)
Messages
35.
The food I eat goes down my esophagus to my __________.
a)
Bladder
b)
Kidney
c)
Stomach
d)
Big Toe
36.
How many bones make up a human adult?
a)
205
b)
206
c)
207
d)
208
37.

Which of the following organisms is a producer?

a)

grass

b)

rabbit

c)

fox

d)

snake

38.

Which of the following organisms is a primary consumer?

a)

grass

b)

rabbit

c)

fox

d)

snake

39.

Which of the following organisms uses photosynthesis to get the energy it needs to survive?

a)

grass

b)

rabbit

c)

fox

d)

snake

40.

Which of the following organisms in competition with the weasel for their food source?

a)

grass

b)

rabbit

c)

fox

d)

snake

41.

Which of the following organisms is a herbivore?

a)

grass

b)

rabbit

c)

fox

d)

snake

42.

What would happen to the rabbit population if the fox population moved out of the area represented by the food web?

a)

The rabbit population would increase

b)

The rabbit population would decrease

c)

The rabbit population would neither increase nor decrease

43.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
44.
A consumer that hunts is called:
a)
a producer.
b)
an omnivore.
c)
a predator.
d)
a herbivore.
45.
A frog eats a fly. The frog and fly are demonstrating ________.
a)
mutualism
b)
competition
c)
predator/prey
d)
parasitism
46.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
47.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
48.
What does a food chain represent?
a)
How all living organisms within a habitat are connected.
b)
All of the things that a particular animal eats.
c)
How plants create their own food.
d)
A single path of energy transfer within a habitat.
49.
The arrows in a food chain or web represents what?
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms. 
d)
They represent how water is transferred within a habitat.
50.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
51.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them. 
b)
They may eat more than one other organism. 
c)
This organism gets its energy from multiple sources. 
d)
They have no resources available to them.
52.

Potential energy is

a)

energy due to position.

b)

energy due to motion.

53.

Kinetic energy is

a)

energy due to position.

b)

energy of motion.

54.

Which ball has the greater potential energy and why?

a)

The blue ball has more PE because it is closer to the ground.

b)

The blue ball has more PE because it has more mass.

c)

The green ball has more PE because it's height is greater.

d)

The green ball has more PE because it has less mass.

55.

Which pie chart represents the energy balance of the rollercoaster in this diagram?

a)

Choice A

b)

Choice B

c)

Choice C

d)

Choice D

56.

What energy transformation takes place as a rock rolls down a hill?

a)

None

b)

Gravitational Potential Energy to Kinetic Energy

c)

Thermal Energy to Kinetic Energy

d)

Rock Energy to Mechanical Energy

57.

What energy transformation takes place when a skateboarder uses their speed to skate up a ramp

a)

Gravitational Potential Energy to Kinetic Energy

b)

Kinetic Energy to Gravitational Potential Energy

c)

Rotational Energy to Mechanical Energy

d)

None

58.

Which of the following energy transformations takes place as someone skids to a stop across the ground?

a)

None of these

b)

Thermal Energy to Sound Energy

c)

Sound Energy to Kinetic Energy

d)

Kinetic Energy to Thermal Energy

59.

Which of the following energy transformations takes place as a battery-operated toy lights up and starts moving?

a)

Elastic Potential Energy to Kinetic Energy

b)

Electrical Energy to Chemical Energy

c)

Chemical Energy to Kinetic Energy

d)

None of these

60.

Which of the following energy transformations takes place when you plug in a fan and the blades start turning

a)

Electrical Energy to Kinetic Energy

b)

Rotational Energy to Wind Energy

c)

Thermal Energy to Cold Energy

d)

None of these

61.

The movement of the tectonic plates is caused by

a)

the rotation of the Earth.

b)

convection currents in the Asthenosphere

c)

the gravity of the iron-nickel core.

d)

the Moho discontinuity.

62.

Observe this diagram of a plate boundary. One statement BEST describes what is happening. It is that

a)

the oceanic crust is melting.

b)

the denser ceanic crust is subducting under the less dense oceanic crust

c)

volcanic islands are forming.

d)

the tectonic plates are moving away from each other.

63.

Most geologists think that the movement of Earth’s plates is caused by _______

a)

convection.

b)

continental drift.

c)

subduction.

d)

conduction.

64.

A place where two plates slip past each other, moving in opposite directions, is known as a _______

a)

transform boundary

b)

divergent boundary.

c)

convergent boundary.

d)

rift valley.

65.

The place where two plates come together is known as a _______

a)

transform boundary.

b)

divergent boundary.

c)

convergent boundary.

d)

rift valley.

66.

______ Tides, tides that are weaker than normal, happen when the Moon is at 1st or last quarter phase & the sun & moon interfere with

a)

Spring

b)

High

c)

Low

d)

Neap

67.

Neap tides, relatively weak tides, occur when the Moon is in position(s)

a)

A

b)

B

c)

A and C

d)

B and D

68.

Tides are caused by

a)

Gravity

b)

Heat

c)

Waves

d)

Winds

69.

Large tides, called spring tides, are experienced in the Earth's oceans when the moon is in position

a)

A

b)

B and D

c)

B

d)

A and C

70.

If you live in the southern hemisphere, what season would you be experiencing in position C this diagram?

a)

Fall

b)

Winter

c)

Summer

d)

Spring

71.

If the earth were not tilted on its axis, what would be the result?

a)

Day length would be less than 24 hours.

b)

Both sides of the moon would be visible.

c)

Temperatures would be constant year round.

d)

The length of the year would be more than 365 days.

72.

Earth's seasons are influenced by the Earth's tilt on its axis as well as its _____________ around the Sun

a)

Revolution

b)

Barycenter

c)

Precession

d)

Rotation

73.

The picture shows us how the Sun's rays strike Earth. Because of the Earth's tilt on its axis, some parts of Earth are having summer and others, winter. What letter or letters on the Earth are experiencing summer?

a)

B

b)

C

c)

B and C

d)

C and D

74.

The longest day of the year occurs during the June solstice for locations in the Northern hemisphere. The ________________ causes seasonal variations in day length to all locations outside of the equator.

a)

spin of the Earth on its axis

b)

position of the Earth on its path around the sun

c)

position of the Earth relative to the position of the moon

d)

tilt of the Earth's axis relative to the plane of the ecliptic

75.

Which of the graphs shows that one of runners started 10 yards further ahead of the

other?

a)
b)
c)
d)
76.

In which of the following graphs below are both runners moving at the same speed?

a)
b)
c)
d)
77.

Match the description to the graph:

"The car is stopped."

a)
b)
c)
d)
78.

Match the description to the graph:

"The car is traveling at a constant speed."

a)
b)
c)
d)
79.

Segment O-A The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward

80.

Segment A-B The bus is _________________.

a)

at rest

b)

returning (to original position)

c)

moving forward