NEW
Font size
S
M
L
XL
Worksheets7th Grade Science Quarter 3 Assessment Practice
Total questions: 56
Worksheet time: 28mins
Name
Class
Date
1.
1. Which of the following is NOT a step in the scientific method?
a)
Making observations
b)
Forming a hypothesis
c)
Accepting the first result without verification
d)
Drawing conclusions from data
2.
2. What is the most important reason for wearing safety goggles during a lab experiment?
a)
To look professional
b)
To protect your eyes from harmful substances
c)
To improve your vision
d)
To match other students
3.
3. When conducting an experiment, what is the purpose of a control group?
a)
To make the experiment more complicated
b)
To provide a basis for comparison
c)
To create additional variables
d)
To speed up the experiment
4.
4. A student notices that plants grow taller when exposed to classical music. Which of the following would be the best hypothesis?
a)
I think plants like music
b)
Plants exposed to classical music will grow faster than plants not exposed to music
c)
All plants need music to grow
d)
Classical music makes everything better
5.
5. If you accidentally spill a chemical in the lab, what should you do first?
a)
Clean it up yourself
b)
Run out of the room
c)
Tell your teacher immediately
d)
Pour water on it
6.
6. What is the dependent variable in an experiment?
a)
What the scientist changes on purpose
b)
What is being measured or observed as a result
c)
What stays the same throughout the experiment
d)
The initial observation
7.
7. When making observations, which sense should NEVER be used in a science lab?
a)
Sight
b)
Taste
c)
Touch
d)
Smell
8.
8. Which safety equipment should you know the location of BEFORE starting any lab work?
a)
Fire extinguisher only
b)
First aid kit only
c)
Emergency shower only
d)
All safety equipment including eyewash station, fire extinguisher, and first aid kit
9.
9. What is the purpose of a hypothesis?
a)
To prove you're always right
b)
To make a testable prediction
c)
To complete the experiment quickly
d)
To avoid doing research
10.
10. This piece of equipment will_____.
a)
Smother a small Fire
b)
Keep chemical spills from spreading
c)
wipes spills up at your lab station
d)
restart a stopped heart
11.
1. What are two examples of simple molecules mentioned in the text?
a)
Water and salt
b)
Diamonds and ammonia
c)
Water and ammonia
d)
Salt and diamonds
12.
2. What is an example of an extended structure mentioned in the text?
a)
Water
b)
Ammonia
c)
Salt
d)
Oxygen
13.
3. According to the text, what are two ways that scientists use models to help them understand atoms and molecules?
a)
To create new substances and to make science more fun
b)
To visualize tiny particles and to show how big atoms are
c)
To visualize tiny particles and to understand how they interact
d)
To understand how atoms are arranged and to create new substances
14.
4. Which of the following is an example of a compound?
a)
helium (He)
b)
sodium (Na)
c)
carbon dioxide (CO2)
d)
iron (Fe)
15.
5. Which statement about molecules is true?
a)
Molecules are always composed of only one type of atom.
b)
Molecules are the smallest unit of an element that keeps its chemical properties.
c)
Molecules are formed by atoms bonding together.
d)
Molecules cannot be represented by chemical formulas.
16.
6. Which of the following compounds has three kinds of elements?
a)
NaOH
b)
H2O
c)
NaCl
d)
Na2O
17.
7. Which of the following best describes a physical property of matter?
a)
The ability to rust when exposed to air
b)
The temperature at which a substance melts
c)
The ability to react with acid
d)
The formation of new substances when heated
18.
8. A student observes that a substance conducts electricity, has a metallic luster, and is malleable. What type of matter is this substance most likely?
a)
A nonmetal
b)
A metal
c)
A compound
d)
A mixture
19.
9. What property allows scientists to determine if a substance will dissolve in water?
a)
Density
b)
Conductivity
c)
Solubility
d)
Malleability
20.
10. Which statement about chemical properties is correct?
a)
They can be observed without changing the substance's composition
b)
They describe the appearance of a substance
c)
They involve the ability of a substance to change into new substances
d)
They are always reversible
21.
1. Which of the following best describes how the introduction of a non-native species might affect an ecosystem's biodiversity?
a)
It always increases biodiversity by adding new species
b)
It has no effect on existing species
c)
It can reduce native species populations through competition
d)
It only affects plant species
22.
2. What is the primary role of decomposers in an ecosystem?
a)
They produce their own food through photosynthesis
b)
They break down dead organisms and return nutrients to the soil
c)
They eat only living plants
d)
They regulate the temperature of the ecosystem
23.
3. In a food web, what typically happens when one species' population decreases?
a)
Only predators of that species are affected
b)
The ecosystem immediately collapses
c)
Nothing changes in the ecosystem
d)
Multiple species populations may be affected
24.
4. Which human activity most directly contributes to habitat fragmentation?
a)
Recycling materials
b)
Urban development and road construction
c)
Using renewable energy
d)
Growing organic food
25.
5. Which statement best describes energy flow in an ecosystem?
a)
Energy flows in a circle
b)
Energy is created by consumers
c)
Energy flows in one direction through food chains
d)
Energy remains constant at each trophic level
26.
6. What role do producers play in an ecosystem?
a)
They eat other organisms
b)
They convert sunlight into chemical energy
c)
They break down dead organisms
d)
They regulate population sizes
27.
7. How do environmental changes typically affect species with specific habitat requirements?
a)
They are usually unaffected
b)
They adapt immediately
c)
They are often more vulnerable
d)
They always benefit from change
28.
8. All ecosystems contain both living (biotic) and non-living (abiotic) components. (true/false)
a)
True
b)
False
29.
9. What do the arrows mean on a food chain or food web?
a)
"just ate"
b)
"died"
c)
"moved to"
d)
"gives energy to"
30.
10. What is the primary factor that distinguishes one biome from another?
a)
The number of species present
b)
The type of soil
c)
The climate and weather patterns
d)
The number of producers
31.
1. Which statement best describes the relationship between kinetic energy and mass?
a)
Kinetic energy decreases as mass increases
b)
Kinetic energy increases as mass increases
c)
Kinetic energy remains constant regardless of mass
d)
Kinetic energy and mass have no relationship
32.
2. When a ball is thrown straight up in the air, at what point does it have maximum potential energy?
a)
At the highest point
b)
At the midpoint
c)
Just before hitting the ground
d)
The moment it leaves the hand
33.
3. In a closed system, what happens to the total energy?
a)
It gradually increases over time
b)
It constantly fluctuates
c)
It remains constant
d)
It gradually decreases over time
34.
4. Which example demonstrates energy transfer through conduction?
a)
It doubles
b)
It remains the same
c)
It quadruples
d)
It increases by half
35.
5. What type of energy is stored in a stretched rubber band?
a)
Thermal energy
b)
Kinetic energy
c)
Chemical energy
d)
Elastic potential energy
36.
6. How does thermal energy typically flow between objects?
a)
From colder to warmer objects
b)
From warmer to colder objects
c)
Randomly between objects
d)
Only through solid materials
37.
7. What happens to the temperature of a substance as thermal energy is removed?
a)
It stays the same
b)
It increases
c)
It decreases
d)
It fluctuates randomly
38.
8. Which factor affects the amount of gravitational potential energy an object has?
a)
The object's color
b)
The object's shape
c)
The object's height
d)
The object's width
39.
9. energy made by flowing water
a)
A. wind
b)
B. solar
c)
C. hydroelectric
d)
D. geothermal
e)
E. biomass
40.
10. heat energy from deep within Earth
a)
A. wind
b)
B. solar
c)
C. hydroelectric
d)
D. geothermal
e)
E. biomass
41.
1. Which is most likely to cause a drought?
a)
a low-pressure system over the ocean
b)
extended dry periods
c)
high winds
d)
an earthquake under the ocean
42.
2. Evidence of a meteorite would most likely be _______________.
a)
flooded ecosystems
b)
craters in Earth
c)
extremely large waves
d)
widespread fires
43.
3. This catastrophic event is typically started by lightning or a human
a)
tsunami
b)
wildfire
c)
tornado
d)
blizzard
44.
4. Which student is correct?
a)
Chloe
b)
Phil
c)
Isabella
d)
none of the students
45.
5. Which evidence supports the correct student in part a?
a)
Blizzards usually have high wind speeds and low visibility.
b)
High winds usually create very dry conditions.
c)
The warm water near Sarasota may help create a hurricane.
d)
There is not enough information to tell.
46.
6. Which gas is released into the atmosphere by plants as they photosynthesize?
a)
oxygen
b)
argon
c)
carbon dioxide
d)
nitrogen
47.
7. Atmospheric pressure __________ with __________ altitude.
a)
decreases with increased
b)
decreases with decreased
c)
increases with increased
48.
8. The space shuttle orbits in this layer.
a)
troposphere
b)
stratosphere
c)
mesosphere
d)
thermosphere
49.
9. The ozone layer is found in this atmosphere layer.
a)
Troposphere
b)
Stratosphere
c)
Mesosphere
d)
Thermosphere
50.
10. Which label shows the energy source of the water cycle?
a)
b
b)
d
c)
e
d)
g
51.
5. What is the primary function of chlorophyll in plants?
a)
To protect against herbivores
b)
To store nutrients
c)
To absorb sunlight for photosynthesis
d)
To absorb water
52.
8. Which of the following best describes the role of mitochondria in a cell?
a)
They synthesize proteins
b)
They produce energy through cellular respiration
c)
They control cell division
d)
They store genetic information
53.
4. What is the main reason for the seasons on Earth?
a)
The shape of Earth's orbit
b)
The speed of Earth's rotation
c)
The tilt of Earth's axis
d)
The distance from the sun changes
54.
What is the primary reason for the decline in bee populations worldwide?
a)
Natural predators
b)
Increased honey production
c)
Climate change
d)
Habitat loss and pesticide use
55.
Which process is primarily responsible for the removal of carbon dioxide from the atmosphere?
a)
Photosynthesis
b)
Respiration
c)
Combustion
d)
Evaporation
56.
What is the main consequence of deforestation on the global climate?
a)
Decreased biodiversity
b)
Increased oxygen levels
c)
Decreased carbon dioxide levels
d)
Increased greenhouse gas emissions
Reset
