Solar System
What phenomena keep the planets in orbit around the sun?
Gravity
What is the largest bone in the human body?
The femur, also known as the thigh bone.
What metal is found at the center of the Earth?
Iron. This is very different from the Earth's crust and mantle, which are rich in minerals.
What is the smallest unit of matter?
An Atom
How many colors are in the rainbow?
7
What is the largest star in the solar system?
The Sun
What is the largest organ in the human body?
The skin.
What is the tallest mountain in the world?
Mount Everest
What is Isaac Newton known for?
Gravity
True or False: Electrons are smaller than atoms.
True
Would you weigh more or less on Mars?
Less. A person who weighs 200 pounds on Earth would weigh just 76 pounds on Mars.
What do white blood cells do?
Protect you against illness and disease.
How do scientists measure the severity of an earthquake?
They use something called the Richter Scale.
What is considered room temperature?
72 degrees Fahrenheit
What is the hardest natural substance on Earth?
Diamond
What color is the sunset on Mars?
Blue
What two elements is water made of?
Hydrogen and Oxygen
How many continents are there in the world?
7
Africa, Antarctica, Asia, Australia/Oceania, Europe, North America, and South America
How many states of matter are there?
Four. Solid, Liquid, Gas, and Plasma
Can an airplane go in reverse?
Yes
What planet is the closest to the sun?
Mercury
What kind of energy does the sun create?
Nuclear energy.
Which city in Italy is famous for its canals?
Venice
What word can you use to describe when a solid turns into a liquid?
Melting
What is the largest desert in the world?
It's not the Sahara, but actually Antarctica