Matter
Motion
Forces
Chemistry
Astronomy
100
This term describes the amount of matter in a substance. It is typically measured in grams or kilograms.
What is mass?
100
This is the formula to calculate the speed of a moving object.
What is speed= distance/time?
100
This is a backwards force caused by two surfaces that are touching.
What is friction?
100
This number describes the number of protons in an atom of a given element.
What is the atomic number?
100
This is the largest planet in our solar system. Like the sun, it is composed primarily of hydrogen and helium.
What is Jupiter?
200
This term describes the amount of space an object takes up. You might measure it in cubic centimeters or milliliters.
What is volume?
200
Velocity refers to both speed and this.
What is direction?
200
The unit of measurement for a force is named after this scientist.
Who is Newton?
200
These chemicals taste bitter and feel slippery. They are often used in cleaning products.
What are bases?
200
This unit of measurement is used for distances between stars and galaxies.
What is the light year?
300
This physical property describes the relationship between mass and volume for a substance.
What is density?
300
This term describes a change in velocity.
What is acceleration?
300
This attractive force depends on the mass of two objects.
What is gravity?
300
Helium, Argon, and Krypton are all part of this exclusive group on the periodic table.
What is the noble gases?
300
These icy bodies come from deep space and develop a tail when their highly elliptical orbits bring them near the sun.
What are comets?
400
This state of matter has no definite shape or volume.
What is gas?
400
A person walking 1.5 hours and traveling 7.5 km would have this average speed.
What is 5 km/hr?
400
Terminal velocity is the result of these two forces becoming balanced.
What are drag and gravity?
400
A balanced chemical equation demonstrates this law of chemistry.
What is the conservation of mass?
400
These are the three main shapes of galaxies, each containing a cluster of billions of stars.
What are spiral, elliptical, and irregular?
500
Matter can change directly from a solid to a gas through this process.
What is sublimation?
500
A car moving 60 mph would have to drive this long to travel 300 miles.
What is 5 hours?
500
This upward force is exerted by a fluid on matter. It's what helps things float.
What is the buoyant force?
500
The isotope Carbon-14 has this many neutrons in its nucleus.
What is 8?
500
These are the only two planets in our solar system that have no moons.
What are Mercury and Venus?
M
e
n
u