8th Science STAAR Review

Which of the following is classified as an element?

• NaCl

• CO

• Na

• H₂O

Which part of the atom determines the element’s identity?

• Atoms

• Neutrons

• Protons

• Electrons

A student rides a bicycle down a hill. At which point do the student and the bicycle have the most potential energy?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

A student rode a bicycle 15 miles in 90 minutes. What was the student’s average speed in miles per hour?

• 10 mph

• 17 mph

• 20 mph

• 30 mph

Tags

NGSS.MS-PS3-1

Which of the following keeps Earth in its orbit?

• the rotation of Earth

• the gravity of the sun

• the revolution of the moon

• the gravity of the moon

Tags

NGSS.MS-ESS1-2

What unit do scientists use to measure size and distance in space?

• Kilometers

• Miles

• Light Years

• Moon units

Tags

NGSS.MS-ESS1-3

Mushrooms and yeasts are classified together in the fungi kingdom. Specific characteristics are used to classify these organisms. Which of the following is a characteristic used to classify these organisms as fungi?

• They are parasites.

• They are unicellular.

• They are prokaryotes.

• They are heterotrophs.

Blue whales live in oceans. What type of factors do they rely on for their existence?

• Only biotic factors

• Only abiotic factors

• Both biotic and abiotic factors

• Neither biotic nor abiotic factors

Tags

NGSS.MS-LS2-3

A metal body of mass 189 g occupies a volume of 70 cm3. Identify the metal. Use the chart below and identify what metal you have.

• Tungsten

• Lead

• Aluminum

• Iron

Tags

NGSS.MS-PS1-2

Gail’s cross-country coach advised her to eat well-balanced meals in order to have plenty of energy for their upcoming track meet. To which transformation of energy is Gail’s coach referring?

• heat energy to mechanical energy

• mechanical energy to electrical energy

• chemical energy to mechanical energy

• thermodynamic energy to dynamic energy

Tags

NGSS.HS-PS3-3