8TH GRADE SCIENCE STAAR REVIEW 2019

Front

What is the correct order of the components of the universe from SMALLEST to LARGEST?

Back

Moon -> Planets -> Stars -> Nebula -> Galaxy -> Universe

Front

How many elements are in the chemical formula C6H12O6?

Back

3

Front

Is the equation Al + O2 -> 2Al2O3 balanced?

Back

No!

Front

What star stage is our sun currently in?

Back

Main Sequence

Front

How many atoms are in the neurotransmitter serotonin (C10H12N2O)?

Back

25

Front

Define a galaxy.

Back

A galaxy is a massive system that consists of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.

Front

What is the difference between a planet and a moon?

Back

A planet is a celestial body that orbits a star, while a moon is a natural satellite that orbits a planet.

Front

What is the definition of a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation.

Front

What is the main sequence stage of a star?

Back

The main sequence is the longest stage in a star's life cycle where it fuses hydrogen into helium in its core.