8. Which safety equipment should you know the location of BEFORE starting any lab work?

All safety equipment including eyewash station, fire extinguisher, and first aid kit

9. What is the purpose of a hypothesis?

To complete the experiment quickly

10. This piece of equipment will_____.

Keep chemical spills from spreading

wipes spills up at your lab station

3. According to the text, what are two ways that scientists use models to help them understand atoms and molecules?

To visualize tiny particles and to understand how they interact

To create new substances and to make science more fun

To visualize tiny particles and to show how big atoms are

To understand how atoms are arranged and to create new substances

5. Which statement about molecules is true?

Molecules are formed by atoms bonding together.

Molecules are always composed of only one type of atom.

Molecules are the smallest unit of an element that keeps its chemical properties.

Molecules cannot be represented by chemical formulas.

7. Which of the following best describes a physical property of matter?

The temperature at which a substance melts

The ability to rust when exposed to air

The formation of new substances when heated

10. Which statement about chemical properties is correct?

They involve the ability of a substance to change into new substances

They can be observed without changing the substance's composition

They describe the appearance of a substance

1. Which of the following best describes how the introduction of a non-native species might affect an ecosystem's biodiversity?

It can reduce native species populations through competition

It always increases biodiversity by adding new species

It has no effect on existing species

2. What is the primary role of decomposers in an ecosystem?

They break down dead organisms and return nutrients to the soil

They produce their own food through photosynthesis

They regulate the temperature of the ecosystem

3. In a food web, what typically happens when one species' population decreases?

Multiple species populations may be affected

Only predators of that species are affected

The ecosystem immediately collapses

Nothing changes in the ecosystem

4. Which human activity most directly contributes to habitat fragmentation?

Urban development and road construction

5. Which statement best describes energy flow in an ecosystem?

Energy flows in one direction through food chains

Energy remains constant at each trophic level

6. What role do producers play in an ecosystem?

They convert sunlight into chemical energy

7. How do environmental changes typically affect species with specific habitat requirements?

They always benefit from change

10. What is the primary factor that distinguishes one biome from another?

The climate and weather patterns

1. Which statement best describes the relationship between kinetic energy and mass?

Kinetic energy increases as mass increases

Kinetic energy decreases as mass increases

Kinetic energy remains constant regardless of mass

Kinetic energy and mass have no relationship

3. In a closed system, what happens to the total energy?

It gradually increases over time

It gradually decreases over time

1. Which is most likely to cause a drought?

a low-pressure system over the ocean

5. Which evidence supports the correct student in part a?

The warm water near Sarasota may help create a hurricane.

Blizzards usually have high wind speeds and low visibility.

High winds usually create very dry conditions.

There is not enough information to tell.

5. What is the primary function of chlorophyll in plants?

To absorb sunlight for photosynthesis

7th Grade Science Quarter 3 Assessment Practice

Authored by Christiane Wagner

Science

6th - 8th Grade

Used 11+ times

7th Grade Science Quarter 3 Assessment Practice

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56 questions

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MULTIPLE CHOICE QUESTION

30 sec • 2 pts

1. Which of the following is NOT a step in the scientific method?

Making observations

Forming a hypothesis

Accepting the first result without verification

Drawing conclusions from data

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

2. What is the most important reason for wearing safety goggles during a lab experiment?

To look professional

To protect your eyes from harmful substances

To improve your vision

To match other students

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

3. When conducting an experiment, what is the purpose of a control group?

To make the experiment more complicated

To provide a basis for comparison

To create additional variables

To speed up the experiment

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

4. A student notices that plants grow taller when exposed to classical music. Which of the following would be the best hypothesis?

I think plants like music

Plants exposed to classical music will grow faster than plants not exposed to music

All plants need music to grow

Classical music makes everything better

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

5. If you accidentally spill a chemical in the lab, what should you do first?

Clean it up yourself

Run out of the room

Tell your teacher immediately

Pour water on it

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

6. What is the dependent variable in an experiment?

What the scientist changes on purpose

What is being measured or observed as a result

What stays the same throughout the experiment

The initial observation

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

7. When making observations, which sense should NEVER be used in a science lab?

Sight

Taste

Touch

Smell

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