Random
Why is the sky blue?
The sun's white light scatters more blue light in the atmosphere than other colors, making the sky look blue.
What is energy?
The ability to do work, like the energy in a stretched rubber band (potential energy) or a moving car (kinetic energy).
What's the biggest thing in our solar system?
The sun
What is the hardest natural substance on Earth?
Diamond
What can you do in a lab and on a date?
Chemistry
How are rainbows made?
Sunlight bends (refracts) and separates into colors as it passes through water droplets.
What's the hottest planet?
Venus, even though Mercury is closer to the Sun.
What are the four "gas giant" planets?
Jupiter, Saturn, Uranus, Neptune.
What is the fastest speed known in the Universe?
The speed of light?
I eat iron and turn it red, but never get sick.
Rust
What's the difference between an echo and a sound?
An echo is a sound that bounces back to you, like a ball hitting a wall.
What state of matter has a definite shape and volume?
A solid
Which planet is famous for its beautiful rings?
Saturn
What do botanists study?
Plants
What flowers does a solar system like?
Sunflowers
Why can we see lightning before we hear thunder?
Light travels much faster than sound.
What happens when you heat most metals?
They expand (get bigger).
What is the color of the sun?
White
How many elements are there in the periodic table?
118
I'm found everywhere, good or bad for you, inside and out. What am I?
Answer: Water (or cells, bacteria, etc.).
What is gravity?
The invisible force that pulls things toward each other, keeping us on Earth.
Scientists define energy as?
The ability to do work
How many stars are in the universe?
More than all the grains of sand on Earth!.
What is the hardest metal on Earth?
Tungsten
What word is spelled the same forwards, backwards and upside down?
NOON