Cells & Body Systems
To prove a flowering plant can react to its environment you can point out that its roots respond to this specific downward force.
Gravity
In a city analogy for cell organelles, this gel-like fluid found in all cells represents the water found throughout the city.
Cytoplasm
Due to the difference between the speed of light and sound, a 6-second delay between a lightning flash and thunder means the strike was this far away.
2 km
On the standard visible light spectrum, this colour is nestled perfectly between green and indigo.
Blue
In a flexible container, this is the exact relationship between the volume of a gas and the pressure it exerts.
The smaller the volume, the higher the pressure.
The stomach is an organ of digestion, but it relies on this organ to deliver the food to be digested.
Esophagus
Plant cell walls are tough and solid because they are built from this specific carbohydrate material.
Cellulose
Bumpy or rough surfaces cannot produce a clear image reflection because they cause this specific type of scattered bouncing.
Diffuse reflection
According to wave physics, as a wave's frequency climbs higher, its wavelength and its overall energy do this.
Wavelength decreases, energy increases
To solve for the area of ground covered by a 102 000 N stack of bricks pushing down with 153 000 Pa of pressure, you must set up this fraction.
102 000 N / 153 000 Pa
Carbon dioxide waste is carried by your blood to this major respiratory organ, where it is transferred out of blood vessels and exhaled.
Lungs
A student inspecting an unknown cell can identify it as a plant cell by spotting these green "solar factories" containing chlorophyll.
Chloroplast
This colourful phenomenon happens when white light bends and splits into a rainbow while passing through a raindrop or sun catcher.
Dispersion
Your skin utilizes this type of radiation to synthesize Vitamin D, though getting too much of it will result in a painful sunburn.
UV
241 000 N
When you overheat, your ________________ tells muscles around your skin's blood vessels to relax, giving you a flushed look to cool you down.
Nervous system
A cell that does a massive amount of cellular work would require an unusually high number of these energy-producing "power plants".
Mitochondria
When white light strikes a red apple, this happens to every single colour in the spectrum except for red.
Absorbed
If you need waves that can heat up your dinner, transmit television broadcasts, and bounce data off communication satellites, you are using these two types of radiation.
Microwaves and radio waves
Because pneumatic systems rely on gases rather than liquids to transmit force, their internal volume possesses this highly squeezable property.
Compressible (OR indefinite volume)
The structural feature, absent in animal cells, is entirely responsible for giving a plant cell its rigid, boxy shape.
Cell wall
Animal cells use them to hold small food reserves, but in plant cells, this massive bubble fills with water to keep the whole plant firm.
Vacuole
Unlike most other waves, light waves require no physical substance to carry them, meaning they can easily travel through this empty expanse of space.
Vacuum
This highest-energy band of radiation is targeted at tumors during cancer therapy, though accidental exposure causes severe radiation sickness.
Gamma
Particle theory explains that heating a sealed spray can is incredibly dangerous because the fast-moving particles cause this to happen inside the can.
Pressure increases until it explodes