electricity
ecology
chemistry
space
100

What is current?

The flow of electric charge is called this.

100

What is an ecosystem?

The living and nonliving things that interact in a specific area.

100

What is Hydrogen?

the lightest and first element on the periodic table.

100

What is the Sun?

This is the closest star to Earth.

200

What is a battery (or cell)?

A source of electrical energy in most circuits.

200

What are producers?

These organisms make their own food using sunlight.

200

What is the atomic number?

This number tells you how many protons an atom has.

200

What is the Milky Way?

This is the name of our galaxy.

300

What is a parallel circuit?

If one bulb goes out, the others stay on in this type of circuit.

300

What is a decomposer?

This type of organism breaks down dead plants and animals.

300

What is an element?

A pure substance made of only one kind of atom.

300

What is Pluto?

This is a dwarf planet that was once considered the 9th planet.

400

What is a conductor?

A material that allows electric current to pass through easily.

400

What is a food chain?

 A diagram that shows how energy flows from one organism to another.

400

What is mass number minus atomic number?

This is how you calculate the number of neutrons.

400

What is the tilt of Earth’s axis?

The reason we have different seasons on Earth.

500

What is Ohm's Law?

This is the law of electricity that represents voltage, current, and resistance in a circuit.

500

What is deforestation?

 This human activity can lead to habitat destruction and species extinction.

500

What is the nucleus?

This is the center of an atom.

500

What is a supernova?

A star explodes in this type of event at the end of its life cycle.

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