Science Olympiad 8th grade

Which of the following best describes the relationship between energy and waves?

• Energy can only be transferred through mechanical waves

• Waves transfer energy but not matter

• Waves only exist in solid materials

• Energy and waves are unrelated phenomena

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What is the primary function of mitochondria in cells?

• Store genetic information

• Produce energy through cellular respiration

• Synthesize proteins

• Control cell division

Tags

NGSS.HS-LS1-7

According to Newton's First Law of Motion, an object will:

• Always slow down eventually

• Remain in motion or at rest unless acted upon by an external force

• Accelerate proportionally to its mass

• Change direction randomly

Which factor most directly influences the rate of photosynthesis?

• Wind speed

• Soil type

• Light intensity

• Atmospheric pressure

Tags

NGSS.MS-LS1-6

What is the main difference between chemical and physical changes?

• Physical changes are always reversible

• Chemical changes produce new substances

• Physical changes require more energy

• Chemical changes are always visible

In the periodic table, elements in the same group share:

• The same atomic mass

• The same number of neutrons

• Similar chemical properties

• The same atomic number

What is the primary role of DNA in living organisms?

• Energy storage

• Waste removal

• Genetic information storage

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which statement about climate change is most accurate?

• It only affects polar regions

• It's solely caused by natural processes

• It influences global weather patterns

• It only impacts ocean temperatures

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS3-4

How do plate tectonics contribute to Earth's surface features?

• They create mountains and oceanic trenches

• They only affect ocean floors

• They have no effect on volcanoes

• They only cause earthquakes

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-2

What is the main function of white blood cells?

• Transport oxygen

• Fight infection

• Carry nutrients

• Clot blood