Worksheets7th grade Final review
Total questions: 50
Worksheet time: 25mins
What is the smallest unit of matter?
Molecule
Atom
Electron
Neutron
What charge does an electron have?
Positive
Negative
Neutral
No charge
Which of the following is a renewable resource?
Coal
Natural Gas
Wind
Oil
What is the difference between weather and climate?
Climate is short-term, weather is long-term
Weather is the daily condition; climate is the average over time
They are the same
Climate refers to only temperature
Which gas was rare in Earth’s early atmosphere?
Carbon dioxide
Methane
Water vapor
Oxygen
What term describes the amount of water vapor in the air?
Visibility
Humidity
Precipitation
Wind
Which of these best describes the atmosphere?
A water cycle layer
The solid part of Earth
The layer of gases surrounding Earth
A magnetic field
What is the main gas in Earth’s current atmosphere?
Oxygen
Nitrogen
Carbon Dioxide
Hydrogen
What process moves water through the water cycle?
Photosynthesis
Gravity
Evaporation, condensation, and precipitation
Respiration
Which of these is a nonrenewable resource?
Water
Solar
Coal
Wind
What is refraction?
Light bouncing off a surface
Bending of light when it enters a new material
Light spreading into colors
Blocking of light
What happens to light when it passes through a colored filter?
All colors pass through
No light passes through
Only certain colors pass through
Light becomes stronger
Which material is transparent?
Wood
Metal
Glass
Stone
What tool can separate white light into colors?
Microscope
Prism
Thermometer
Magnifying glass
What causes a shadow?
Light passing through an object
Sound waves
Light being blocked by an object
Light bending
Which direction does light travel in?
In a curve
Random directions
In straight lines
In waves only
What is a translucent object?
Allows no light through
Allows some light through
Allows all light through clearly
Reflects all light
What do we call a diagram showing how light travels?
Light chart
Ray diagram
Spectrum map
Waveform
What is the shape of the Milky Way galaxy?
Irregular
Spiral
Elliptical
Circular
What is the universe?
A star system
A galaxy
Everything that exists in space
A solar system
Which nutrient helps build muscle?
Carbohydrates
Protein
Fat
Vitamin C
What is a good source of carbohydrates?
Chicken
Butter
Bread
Fish
Which vitamin is important for healthy vision?
Vitamin C
Vitamin A
Vitamin D
Vitamin B12
Which of these is a benefit of regular exercise?
Weakens muscles
Improves heart health
Increases sugar levels
Reduces bone strength
What does water do for the body?
Gives energy
Keeps bones strong
Regulates temperature and moves nutrients
Builds muscle
Which of the following is a nutrient?
Fiber
Protein
Water
All of the above
Which food is high in fat?
Apple
Butter
Broccoli
Bread
Which vitamin helps your immune system?
Vitamin A
Vitamin C
Vitamin D
Vitamin K
Which system breaks down food into nutrients?
Circulatory
Digestive
Respiratory
Skeletal
What is malnutrition?
A balanced diet
Overeating
Lack of proper nutrition
Drinking too much water
Which of these metals is most reactive in water?
Gold
Iron
Sodium
Silver
What is released in an exothermic reaction?
Cold
Heat
Water
Gas only
In a chemical reaction, the substances you start with are called:
Products
Catalysts
Reactants
Solutions
Which of the following is a sign of a chemical reaction?
Melting
Evaporation
Color change
Freezing
What does this equation represent? Metal + Acid → Salt + Hydrogen
A physical change
A metal reaction
A gas explosion
A condensation process
What kind of reaction absorbs heat?
Exothermic
Endothermic
Reactive
Explosive
What is a pure substance made of?
One type of atom or molecule
Many mixtures
Water and sugar
Elements and compounds
Which of the following is a product in this reaction: Zinc + Hydrochloric Acid → Zinc Chloride + Hydrogen
Zinc
Hydrochloric Acid
Zinc Chloride
Reactant
What does a catalyst do in a reaction?
Slows it down
Stops it
Speeds it up
Changes its direction
Which of these is an inert metal?
Sodium
Iron
Gold
Zinc
Which material is magnetic?
Wood
Plastic
Iron
Glass
What is a magnetic field?
A metal surface
A gravitational pull
The area around a magnet where force acts
Light reflection zone
Which poles of a magnet attract?
North and North
South and South
North and South
All attract
What tool detects magnetic fields?
Thermometer
Compass
Barometer
Magnetoscope
What can increase the strength of an electromagnet?
Shorter wire
Stronger battery
Removing the coil
Wooden core
Which of these is not a part of an electromagnet?
Battery
Coil of wire
Iron nail
Wooden stick
Which object uses electromagnets?
Pencil
Speaker
Candle
Spoon
What current is needed for an electromagnet?
No current
Alternating
Direct
Static
What type of wire is best for conducting electricity in electromagnets?
Plastic
Copper
Rubber
Glass
What happens when you cut a magnet in half?
It loses all magnetism
You get two magnets
It becomes stronger
Only one piece is magnetic
