Earth science
Interdependence and ecology
Human body systems
Forces and motion
Chemical reactions
100

5km

How thick is the crust under the oceans?

100

The feeding role that must be at the start of every food web

What is a producer?

100

Cell

What is the basic unit of living things?

100

Total distance divided by total time

What is AVERAGE speed?

100

The three subatomic particles

What are protons, neutrons, and electrons?

200

Tectonic plate boundaries

Where do most earthquakes and volcanos exist?

200

Primary consumer

Which feeding role eats a producer?

200

DNA

Which molecule controls how a cell behaves?

200

The standard unit for force

What is "newton"?

200

The number of protons in an atom or element

What is atomic number?

300

Subduction

What is one plate moving under another called?

300

Apex predator

What consumer is at the top of a food web?

300

A system

What is a group of organs that do a particular job called?

300

Complete the phrase: Forces always come into existence in ________ .

What is "pairs"?

300

Elements that are shiny, ductile, and conduct electricity

What are metals?

400

Rock made from cooling lava

What is igneous rock?

400

Talons on an eagle

What is an example of a physical adaptation?

400

This organ takes most of the nutrients out of our food

What is the small intestine?

400

Acceleration

What is a change of speed, direction, or both?

400

Increasing temperature increases the rate of reaction because _________

What is more collisions per second with more energy per collision

500

Convection currents in the mantle

What makes tectonic plates move?

500

Energy flows from ______ to the ______ of an arrow in a food chain

What are "tail" and "head"?
500

An organ

What is a group of tissues that do a specific essential job called?

500

When the sum of all forces on an object is not zero you get this motion

What is acceleration?

500

The only two elements that are liquid at room temperature

What are bromine (Br) and mercury (Hg)?