What is a pinhole camera, and how does it work?

Charis — Houston, TX

What is the longest river on Earth?

Jenni — Imperial Beach, CA

How are people beautiful on the inside?

Megan — Midlothian

How do we navigate using stars?

Justine — Union City, CA

How does a toy top spinwithout falling down?

Colleen — Glen Ellyn, IL

Do toads give you warts?

Ernest — Crestview, FL

How does 3D printing work?

Shannon — Sun Valley, CA

What is a coat of arms?

Stephanie — Pasadena, MD

What is the Harlem Renaissance?

Julie — Dedham, MA

what is cerebral palsy?

Sharon — Concord, NC

How does a website remember all of the usernames and passwords?

Nadya — Forked River, NJ

How do jellyfish know where they are going without eyes

Krissi — Elk Grove Village, IL

What is the difference of a PSA and a commercial?

Jason — Eastvale, CA

Who discovered the first dinosaur bone?

Charlotte — Chagrin Falls, OH

How do you build a building such as a school?

Jessica — Union Grove, WI

What is biomimicry?

Amy — San Antonio, TX

why are there beached whales

Collin — St. Francis, MN

How were Americans able to win the Revolutionary War?

Gabrielle — chicago, IL

how do you control moving?

Amelia — Catonsville , MD

Who was King Tut?

Dana — Richmond, TX

How does a color printer print all the different colors?

Michael — Charlottesville, VA

What do kids play in other countries?

Michelle — Wrightsville , PA

How does cow manure turn in to fertliszer

Owen — Seattle, WA

How do you be internet safe?

Gabriel — Los angeles, CA

How bees make honey

Nicole — Vaucluse

do animals use GPS

Kartik — AUCKLAND

how do you create a video game

Destinee — New Jersey, NJ

Why do houses have windows?

P. — Oshawa, OH

Why are some people introverted and some people extroverted?

Kilee — Shawnee, KS

Why don't all markers work on white boards?

Jon — Merrick, NY

How do bees and wasps make their hives and what material is it made from?

Karen — North Andover, MA

Why are dimes smaller than pennies?

Acacia — Round Rock, TX

Do frogs hibernate?

mark — Lockhart, TX

Why was the Periodic Table made?

Ryan — Delaware, OH

How many cars are on the road at one time?

Mrs. Clark's Class — River Falls

Why are planets spherical and not cuboid or any other shape.

Sonika — stone ridge, VA

How was the telescope invented?

Miss Lipman's Class — Greenwich

Who was Muhamad?

Heba — Fontana

Do decomposers decompose decomposers?

Rina — Sunbury, OH

What is surface tension and how does it work?

Koenig Class — Arlington Heights, IL

Where do birds go at night? (If I shook a tree, would they wake up?)

Judy — South Salem, NY

how do CDs work?

belinda — not applicable

What is the most popular book of all time?

Amy — McLean, IL

Why do people get headaches from different scents ?

Amanda — Fort Erie

How are rocks made

Sarah — Barrie

How does a scale work?

Sam — Greenfield, WI

How do the astronauts build a space center in space?

Sarah — Houston , TX

Who made tic-tak-toe?

Trishelle — oskaloosa, IA

why do possoms hang upside down?

riley — Jenks, OK

how can days get shorter?

Ashley — sammamish, WA

what is geothermal ?

Pablo — Beijing

Why do our bodily functions slow down when we sleep

Jason — Richmond, IN

Why is righty "tighty" and lefty "loosey" and not the other way around?

Pam — Carpentersville

What is plastic made of?

harrisen — oskaloosa, IA

why does the sun set earlier every night?

Audrey — Wheeling, WV

Why do we think?

ASHISH — TIRUR

how do they get bubble gum in a lollipop?

jan — Palm Bay, FL

How do people get the money from credit cards?

Alyssa — Northbrook

Why do people have fingernails?

Meredith — Belvidere, IL

Why do people wish on dandelions?

Lina — Austin, TX

Can we actually multi-task?

Jennifer — Northbrook, IL

How do your bones grow?

Jamie — Tauranga

How does Velcro work?

May — Granville, OH

Why do people speak with an accent?

andrew — Charlottesville, VA

What's the difference between a bird and a bat?

Jorge — Vista, CA, CA

Why do computers crash?

Anonymous — west plains, MO

How dose a particle accelerator work?

Noah — East Bentleigh, Victoria

Is planet earth living or nonliving?

Eliza — Melbourne

How do our eyes make us see?

Alix — Lincoln

How much of our brain do we use?

Dylan — Black River, NY

Why do we not fall off the earth?

Mary — Allen, TX

How do seeds form?

Olivia — Levin

What is blood made of?

Alix — Lincoln

Why are four leaf clovers harder to find than three leaf ones?

Tsvetelina — Brooklyn

Where did our numbers 1-9 come from?

Sarah — Leander, TX

How many galaxies are there?

Shelley — Auckland

Why is your fingerprint different

Tom — Ngatea, AL

how do our brains form pictures

alyssa — wellington

How do they make holograms?

Beth — Bowling Green, KY

What's the difference between softwood and hardwood?

Evan — Church Point, AR

How many people have hydrocephalus?

Elizabeth — Centreville, VA

why are some tigers white

Caidence — Bakersfield

how much string is in a baseball?

grant — Belton, TX

Why do figure skaters spin faster with their arms in?

Sofia — Burlington, VT

how dd the expression april showers bring may flowers come about?

Kimberly — Plano, TX

Is time travel possible?

Sarah — Pune

What do the plastic recycling numbers mean?

Anamaria — Newmarket

Why does at low atomic pressure water boils faster?

pradyumna — AL

How do you get into a bad habit?

Aeden — Bozeman, MT

What makes the ocean blue when water is clear?

Ana — Pineville, LA

What will school be like in the future?

Meghan — Cranberry Township, PA

Why did dinosaurs become extinct

Adela — Hamilton

Is the weather similar for different lanes of latitude?

How does sicknes spread to diffrent people

fdsa — salome, LA

Who made up gymnastics

Khiyanna — Winchester , VA

how was water created

Chiamaka

Who invented gears

Can you mix water and air completly?

AL

Why is light sometimes colourful

How do you grow

Beca