Quiz: 9th Grade Science
9th-grade science quiz; Are you a ninth-grader and have been having a hard time with your science classes? Worry no more as the quiz below is perfect for helping you revise all that we have covered. Give it a shot and keep an eye out for more tests like this designed to help you pass the final exams. Do share the quiz with your friends.
- 1.When is an atom stable?
- A.
When it has a full outer orbit.
- B.
When it has the same amount of electrons as protons.
- C.
When it has no neutrons.
- D.
When it has an odd number of valence electrons.
- 2.An ion is formed when an atom loses/gains an electron.
- A.
True
- B.
False
- 3.A molecule is the same thing as an atom.
- A.
True
- B.
False
- 4.How many atoms are in Ca(NO3)2
- A.
Ca-1 N-6 O-2
- B.
Ca-1 N-2 O-6
- C.
Ca-6 N-2 O-1
- D.
Ca-2 N-1 O-6
- 5.
- 6.Which does not indicate a chemical change has occurred:
- A.
Change of color
- B.
Heat is produced
- C.
Smell is produced
- D.
Light is produced
- E.
Gas is produced
- F.
Solid is produced
- 7.What is the equation for photosynthesis?
- A.
H2O+oxygen (light+chlorophyll) = CO2+glucose
- B.
H2O+CO2 (light+chlorophyll) = oxygen+glucose
- C.
CO2+light (chlorophyll +water) = H2O+oxygen
- 8.Photosynthesis provides us with... (more than one answer)
- A.
Energy
- B.
Water
- C.
Oxygen
- D.
Glucose
- E.
Light
- 9.The equation for cellular respiration is _____+______=______+________+______
- 10.Which of the following is not an interaction among ecosystems?
- A.
Competition
- B.
Mutualism
- C.
Equilibrium
- D.
Predation
- 11.Which of the following is not a limiting factor?
- A.
Climate extremes
- B.
Disease
- C.
Predation
- D.
Biodiversity
- E.
Human disturbances
- F.
Competition
- 12._________ is a measure of how many species in an ecosystem.
- 13.Bioamplification/biomagnification is when toxin levels get higher at each trophic level.
- A.
True
- B.
False
- 14.____________ is when toxins build up in a single organism.
- A.
Bioamplification
- B.
Bioaccumulation
- C.
Biomagnification
- 15.The order of the planets is Mars, Venus, Earth, Mercury, Saturn, Uranus, and Neptune.
- A.
True
- B.
False
- 16.The Milky Way is a bar-shaped galaxy.
- A.
True
- B.
False
- 17.A galaxy has more than ___________ stars.
- 18.A star is made of burning hydrogen and helium.
- A.
True
- B.
False
- 19.The Moon is not a satellite.
- A.
True
- B.
False
- 20.A circumpolar constelation can be seen ____________
- A.
Once a year
- B.
All year round
- C.
Never
- D.
Once in every 100 years
- 21.What are some circumpolar constellations? (more than one)
- A.
Draco
- B.
Aquarius
- C.
Ursa major
- D.
Little dipper
- E.
Leo
- 22.The longest day of the year is ________
- 23.Static electricity only happens on conductors.
- A.
True
- B.
False
- 24.Opposite charges attract and like charges repel.
- A.
True
- B.
False
- 25.
- A.
Cation
- B.
Anion
- C.
Onion
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