_____ exercise will keep your heart and lungs healthy.

The _____ heat surfaced at the Earth’s crust creating a

natural hot spring that hikers could bathe in.

The fires were intentionally set by an arsonist with _____.

It’s hard to imagine from its plain exterior, but a _____ contains such spectacular crystals inside.

Geothermal energy is created in Earth's atmosphere.

Pyroclastic rock is commonly found near volcanoes.

A geode is a solid rock.

Lifting weights is considered aerobic exercise.

Pyromania is extremely dangerous.

DIRECTIONS: Choose two words that BEST explain or define the root word below:

aerobic

DIRECTIONS: Choose two words that BEST explain or define the root word below:

aerate

DIRECTIONS: Choose two words that BEST explain or define the root word below:

pyrotechnics

DIRECTIONS: Choose two words that BEST explain or define the root word below:

pyromania

DIRECTIONS: Choose two words that BEST explain or define the root word below:

pyroclastic