Quiz about 7th Grade Science Final Exam - Physical Science

Question 1

Which of the following is a physical change?

Accepted Answer

Melting ice

Answer

Burning wood

Answer

Rusting iron

Answer

Baking a cake

Question 2

Matter is anything that occupies space and has mass. Which of the following are examples of matter?

Accepted Answer

Air and water

Answer

Light and sound

Answer

Heat and energy

Answer

Shadow and reflection

Question 3

Which particles are found in the nucleus of an atom?

Accepted Answer

Protons and neutrons

Answer

Electrons only

Answer

Neutrons and electrons

Answer

Protons and electrons

Question 4

Mass and weight are different because:

Accepted Answer

Mass is the amount of matter in an object, while weight is the force of gravity on that object.

Answer

Mass and weight are always the same.

Answer

Weight is measured in kilograms, and mass is measured in newtons.

Answer

Mass depends on gravity, but weight does not.

Question 5

A graph shows the speed of a moving object over time. At what time does the object stop moving?

Accepted Answer

When the speed is zero

Answer

When the speed is at its maximum

Answer

When the speed is increasing

Answer

When the speed is decreasing

Question 6

What form of energy is stored in food?

Accepted Answer

Chemical

Answer

Thermal

Answer

Nuclear

Answer

Mechanical

Question 7

Label the parts of an atom.

Accepted Answer

Proton, neutron, and electron are the three main parts of an atom. (Specific labeling would depend on the provided diagram.)

Answer

Nucleus, molecule, and ion are the three main parts of an atom. (Specific labeling would depend on the provided diagram.)

Answer

Proton, electron, and photon are the three main parts of an atom. (Specific labeling would depend on the provided diagram.)

Answer

Neutron, positron, and electron are the three main parts of an atom. (Specific labeling would depend on the provided diagram.)

Question 8

Which of the following is a real-life example of Newton's Third Law?

Accepted Answer

A person jumping off a boat and the boat moving backward

Answer

A car accelerating on a straight road

Answer

A ball rolling down a hill

Answer

A plant growing towards sunlight

Question 9

Which of these best conducts electricity?

Accepted Answer

Copper

Answer

Plastic

Answer

Wood

Answer

Glass

Question 10

What happens to molecules in a substance when it is heated?

Accepted Answer

They move faster

Answer

They move slower

Answer

They stop moving

Answer

They disappear

Question 11

What is the basic unit of life?

Accepted Answer

Cell

Answer

Atom

Answer

Organ

Answer

Tissue

Question 12

Label the parts of a plant cell:

Accepted Answer

nucleus, cell wall, chloroplast, vacuole (students should label these parts on a diagram)

Answer

nucleus, mitochondria, ribosome, lysosome (students should label these parts on a diagram)

Answer

cell membrane, cytoplasm, ribosome, centriole (students should label these parts on a diagram)

Answer

nucleus, cell wall, mitochondria, centriole (students should label these parts on a diagram)

Question 13

Which body system is responsible for transporting oxygen?

Accepted Answer

Circulatory

Answer

Nervous

Answer

Digestive

Answer

Skeletal

Question 14

Define photosynthesis.

Accepted Answer

Photosynthesis is the process by which green plants use sunlight to make food from carbon dioxide and water.

Answer

Photosynthesis is the process by which animals convert oxygen into energy.

Answer

Photosynthesis is the process by which plants absorb nutrients from the soil only.

Answer

Photosynthesis is the process by which green plants release carbon dioxide at night.

Question 15

A bar graph shows the number of organisms in different ecosystems. Which has the highest biodiversity?

Accepted Answer

Forest

Answer

Desert

Answer

Ocean

Answer

Grassland

Question 16

Which factor is biotic?

Accepted Answer

Bacteria

Answer

Sunlight

Answer

Rock

Question 17

Decomposers play the following role in an ecosystem:

Accepted Answer

They break down dead organisms and recycle nutrients.

Answer

They produce food through photosynthesis.

Answer

They consume only living plants.

Answer

They provide shelter for animals.

Question 18

In which organelle does photosynthesis occur?

Accepted Answer

Chloroplast

Answer

Mitochondria

Answer

Nucleus

Answer

Cell membrane

Question 19

Energy flows through a food chain in which of the following ways?

Accepted Answer

From producers to consumers to decomposers

Answer

From decomposers to consumers to producers

Answer

From consumers to producers to decomposers

Answer

From decomposers to producers to consumers

Question 20

What causes weather patterns to form?

Accepted Answer

Solar energy and uneven heating of Earth

Answer

The Moons orbit

Answer

Rock layers shifting

Answer

The ocean tides

Question 21

The difference between weather and climate is:

Accepted Answer

Weather refers to short-term atmospheric conditions, while climate refers to long-term patterns.

Answer

Weather and climate are exactly the same.

Answer

Climate refers to daily changes, while weather refers to long-term patterns.

Answer

Weather is only about temperature, while climate is only about rainfall.

Question 22

(Diagram) Label the water cycle:

Accepted Answer

Evaporation, condensation, precipitation, collection.

Answer

Condensation, evaporation, collection, precipitation.

Answer

Precipitation, collection, evaporation, condensation.

Answer

Collection, precipitation, condensation, evaporation.

Question 23

How does human activity contribute to climate change?

Accepted Answer

By increasing greenhouse gas emissions

Answer

By reducing greenhouse gas emissions

Answer

By planting more trees

Answer

By decreasing industrialization

Question 24

Which of the following is a renewable resource?

Accepted Answer

Wind

Answer

Coal

Answer

Oil

Answer

Natural Gas

Question 25

Fossil fuels are formed from:

Accepted Answer

Living plants and animals buried over millions of years

Answer

Minerals found in rocks

Answer

Water and air

Answer

Artificial chemical processes

Question 26

A climate graph shows average temperature and precipitation. Describe the pattern you observe.

Accepted Answer

It shows how temperature and precipitation change throughout the year.

Answer

It shows the population growth over time.

Answer

It shows the types of soil in a region.

Answer

It shows the phases of the moon.

Question 27

Which action helps reduce your carbon footprint?

Accepted Answer

Recycling

Answer

Driving everywhere

Answer

Eating more meat

Answer

Using more electricity

Question 28

Conserving natural resources can be done in which two of the following ways?

Accepted Answer

Recycling materials and reducing water usage

Answer

Burning fossil fuels and deforestation

Answer

Overfishing and excessive mining

Answer

Wasting electricity and polluting rivers

Question 29

It is important to repeat scientific investigations because:

Accepted Answer

it helps confirm the results and increases reliability.

Answer

it makes the experiment more expensive.

Answer

it allows scientists to use more equipment.

Answer

it reduces the need for data analysis.

Question 30

Which of the following is a testable hypothesis?

Accepted Answer

Plants grow better in sunlight than in shade.

Answer

Dogs are the best pets.

Answer

Math is harder than science.

Answer

Ice cream tastes better cold.

Question 31

Define independent and dependent variables in an experiment.

Accepted Answer

Independent variable is the one that is changed or controlled; dependent variable is the one being tested or measured.

Answer

Independent variable is the one being tested or measured; dependent variable is the one that is changed or controlled.

Answer

Both variables are changed in the experiment.

Answer

Neither variable is important in an experiment.

Question 32

Identify the variables in a sample experiment setup.

Accepted Answer

Independent and dependent variables

Answer

Constants and controls only

Answer

Only the results

Answer

Only the hypothesis

Question 33

Which tool measures volume?

Accepted Answer

Graduated cylinder

Answer

Thermometer

Answer

Balance

Answer

Ruler

Question 34

The steps of the scientific method are:

Accepted Answer

Observation, hypothesis, experiment, analysis, conclusion

Answer

Guessing, testing, forgetting, repeating

Answer

Observation, conclusion, experiment, hypothesis

Answer

Experiment, observation, guessing, analysis

Question 35

Why do scientists use models?

Accepted Answer

To represent things that are too small, large, or complex to study directly

Answer

To guess results

Answer

To make experiments easier

Answer

To avoid doing real experiments

Question 36

Give an example of how science and technology are connected.

Accepted Answer

The invention of the telephone using scientific principles.

Answer

The use of art in painting.

Answer

The writing of a novel.

Answer

The playing of a musical instrument.

Question 37

(Data Analysis) Interpret a line graph showing population changes over time.

Accepted Answer

The population increased steadily over time.

Answer

The population decreased steadily over time.

Answer

The population remained constant over time.

Answer

The population fluctuated with no clear trend.

Question 38

Evidence is important when drawing scientific conclusions because:

Accepted Answer

it supports and validates the conclusions.

Answer

it makes experiments more expensive.

Answer

it is required by law.

Answer

it is always easy to find.

Question 39

What is the primary function of the roots in a plant?

Accepted Answer

To absorb water and nutrients from the soil

Answer

To produce food through photosynthesis

Answer

To provide support and structure

Answer

To attract pollinators

Question 40

Which gas is most abundant in Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Carbon Dioxide

Answer

Hydrogen

Question 41

What is the process by which plants release oxygen into the atmosphere?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Fermentation

7th Grade Science Final Exam - Physical Science

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