Concert
Disaster
Touch Grass
Cooking
Opposites Attract
100
What type of wave is sound?
A) Longitudinal
B) Transverse
C) Electromagnetic
D) Static
What type of wave is sound?
A) Longitudinal
→ Sound travels as longitudinal waves, where particles vibrate in the same direction as the wave moves.
100
What causes most earthquakes?
A) Strong winds
B) Tornadoes
C) Tectonic plate movement
D) Volcano smoke
What causes most earthquakes?
C) Tectonic plate movement ✅
→ Earthquakes usually happen when Earth’s plates shift suddenly at fault lines.
100
Which three things do plants need for photosynthesis to happen?
A) Sunlight, water, and carbon dioxide
B) Oxygen, heat, and sugar
C) Dirt, light, and nitrogen
D) Sunlight, oxygen, and chlorophyll
Which three things do plants need for photosynthesis to happen?
A) Sunlight, water, and carbon dioxide ✅
→ Plants use sunlight, water, and carbon dioxide to make glucose (sugar) during photosynthesis.
100
Boiling water is an example of a:
A) Chemical change
B) Physical change
C) Reaction
D) New substance
Boiling water is an example of a:
B) Physical change ✅
→ It changes state (liquid to gas), but it's still water — no new substance is formed.
100
What happens when opposite charges interact?
A) They repel
B) They attract
C) They disappear
D) They cancel gravity
What happens when opposite charges interact?
B) They attract ✅
→ Opposites attract — positive and negative charges pull toward each other.
200
What part of a sound wave controls how loud it sounds?
A) Frequency
B) Amplitude
C) Wavelength
D) Speed
What part of a sound wave controls how loud it sounds?
B) Amplitude
→ Amplitude is how “tall” the wave is — taller waves carry more energy, so the sound is louder.
200
Which kind of storm is powered by warm ocean water?
A) Earthquake
B) Hurricane
C) Tornado
D) Sandstorm
Which kind of storm is powered by warm ocean water?
B) Hurricane ✅
→ Hurricanes get their strength from the heat and moisture over warm ocean surfaces.
200
You see a squirrel eating an acorn. What role does it play in the food chain?
A) Producer
B) Consumer
C) Decomposer
D) Omnivore
You see a squirrel eating an acorn. What role does it play in the food chain?
B) Consumer ✅
→ Consumers eat plants or animals. Squirrels consume plants like nuts.
200
Which kitchen event shows a chemical change?
A) Ice melting
B) Water evaporating
C) Bread baking
D) Chocolate melting
Which kitchen event shows a chemical change?
C) Bread baking ✅
→ Baking causes new substances to form, which is a chemical reaction.
200
What material is magnetic and found in many metals?
A) Wood
B) Plastic
C) Iron
D) Copper
What material is magnetic and found in many metals?
C) Iron ✅
→ Iron, nickel, and cobalt are magnetic materials. Most magnets stick to iron.
300
Why does a mirror ball scatter light across the concert hall?
A) Absorption
B) Refraction
C) Reflection
D) Radiation
Why does a mirror ball scatter light across the concert hall?
C) Reflection
→ Light bounces off the tiny mirrors, spreading beams around the room. That’s reflection!
300
Lava bursts from a volcano and changes the land. The most likely location of this event is:
A) A mountain range that has remained stable for hundreds of years
B) The Bering Strait
C) Islands in the center of a tectonic plate
D) The border of two tectonic plates
Lava bursts from a volcano and changes the land. The most likely location of this event is:
D) The border of two tectonic plates ✅
→ Earthquakes take place on the border of tectonic plates. They result from the plates pushing together, pulling apart or rubbing against each other.
300
Which level in the food web has the most energy?
A) Top predators
B) Herbivores
C) Producers
D) Decomposers
Which level in the food web has the most energy?
C) Producers ✅
→ Producers get energy directly from the sun and pass it up the food chain. Each of the following levels gets a less energy than the organism before it.
300
A chef mixes two things, and the mixture gets hot. What is this?
A) Endothermic
B) Exothermic
C) Physical
D) Evaporation
A chef mixes two things, and the mixture gets hot. What is this?
B) Exothermic ✅
→ In exothermic reactions, energy is released — often as heat.
300
What is the function of a battery in a flashlight circuit?
A) It stores light
B) It powers the circuit by providing energy
C) It cools the wires
D) It absorbs current
What is the function of a battery in a flashlight circuit?
B) It powers the circuit by providing energy ✅
→ The battery pushes electrons through the circuit, powering the light.
400
A crowded concert feels hotter than an empty one. Why?
A) Sound waves heat the room
B) People give off thermal energy
C) The lights create friction
D) Oxygen levels increase
A crowded concert feels hotter than an empty one. Why?
B) People give off thermal energy ✅
→ Our bodies release heat — especially in a packed space with lots of movement.
400
What is convection in the mantle?
A) Heat rising and falling in a fluid
B) Light bouncing off surfaces
C) Earth spinning quickly
D) Ice breaking apart
What is convection in the mantle?
A) Heat rising and falling in a fluid ✅
→ Convection is the cycling movement of hot material rising and cooler material sinking — it helps move tectonic plates.
400
What happens if a predator like the wolf disappears from a forest?
A) Nothing
B) The prey population might grow too much
C) Plants disappear
D) The sun gives more energy
What happens if a predator like the wolf disappears from a forest?
B) The prey population might grow too much ✅
→ Predators keep prey populations in balance. Without them, prey like deer could overgraze.
400
Touching a hot pan causes a burn. What type of heat transfer is this?
A) Convection
B) Conduction
C) Radiation
D) Emission
Touching a hot pan causes a burn. What type of heat transfer is this?
B) Conduction ✅
→ Conduction is the transfer of heat by direct contact, like touching hot metal.
400
What is the correct formula from Newton’s Second Law?
A) Force = Mass × Acceleration
B) Speed = Force ÷ Time
C) Mass = Energy × Time
D) Acceleration = Speed ÷ Distance
What is the correct formula from Newton’s Second Law?
A) Force = Mass × Acceleration ✅
→ This law explains how more mass or more acceleration means more force is needed.
500
During a laser show, the beams bend through fog. What is this effect called?
A) Reflection
B) Refraction
C) Absorption
D) Diffraction
During a laser show, the beams bend through fog. What is this effect called?
B) Refraction ✅
→ Refraction happens when light changes direction as it moves through different materials (like air to fog).
500
Why does more carbon dioxide in the atmosphere cause stronger storms?
A) Greenhouse gases trap heat and increase storm strength
B) The Earth rotates faster
C) Volcanoes are more active
D) Solar energy decreases
Why does more carbon dioxide in the atmosphere cause stronger storms?
A) Greenhouse gases trap heat and increase storm strength ✅
→ CO₂ traps heat, warming oceans and air, which fuels more intense weather.
500
Why is a keystone species so important?
A) It creates new producers
B) It disrupts the balance of the entire ecosystem
C) It decreases decomposers
D) It speeds up photosynthesis
Why is a keystone species so important?
B) It disrupts the balance of the entire ecosystem ✅
→ Removing a keystone species can cause major changes because many other organisms rely on it.
500
A cold pack gets cold when activated. What’s going on?
A) Chemical conduction
B) Endothermic reaction
C) Exothermic change
D) Static energy
A cold pack gets cold when activated. What’s going on?
B) Endothermic reaction ✅
→ The pack absorbs heat from your body to power the chemical reaction — that's endothermic!
500
Why does a balloon rubbed on hair stick to a wall?
A) Magnetic force
B) Gravity increase
C) Static electricity is transferring electrons
D) Light waves are attracting it
Why does a balloon rubbed on hair stick to a wall?
C) Static electricity is transferring electrons ✅
→ Rubbing builds up static electricity — the balloon has extra electrons that attract to the neutral wall.