Grade 9 Science Quiz

30 Questions | By Squishyfish123 | Updated: Aug 27, 2022 | Attempts: 51901

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Are you a ninth-grader having a hard time with your science classes? Worry no more; our ' Grade 9 Science Quiz' is perfect for helping you revise everything we have covered. We ask you to attempt all the questions on the quiz. Let's see how clear you are on your class topics. Give this quiz a fair shot, and make sure to keep an eye out for more tests like this designed to help you pass the final exams. Do share the quiz with your friends. Good luck & keep studying!

Questions and Answers

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.

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
6.

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
7.

Photosynthesis provides us with... (more than one answer)
- A.
  
  Energy
- B.
  
  Water
- C.
  
  Oxygen
- D.
  
  Glucose
- E.
  
  Light
8.

Which of the following is not an interaction among ecosystems?
- A.
  
  Competition
- B.
  
  Mutualism
- C.
  
  Equilibrium
- D.
  
  Predation
9.

Which of the following is not a limiting factor?
- A.
  
  Climate extremes
- B.
  
  Disease
- C.
  
  Predation
- D.
  
  Biodiversity
- E.
  
  Human disturbances
- F.
  
  Competition
10.

_________ is a measure of how many species live in an ecosystem.
11.

Bioamplification/biomagnification is when toxin levels get higher at each trophic level.
- A.
  
  True
- B.
  
  False
12.

____________ is when toxins build up in a single organism.
- A.
  
  Bioamplification
- B.
  
  Bioaccumulation
- C.
  
  Biomagnification
13.

The order of the planets is Mars, Venus, Earth, Mercury, Saturn, Uranus, and Neptune.
- A.
  
  True
- B.
  
  False
14.

The Milky Way is a bar-shaped galaxy.
- A.
  
  True
- B.
  
  False
15.

A galaxy has more than ___________ stars.
16.

A star is made of burning hydrogen and helium.
- A.
  
  True
- B.
  
  False
17.

The Moon is not a satellite.
- A.
  
  True
- B.
  
  False
18.

A circumpolar constellation can be seen ____________
- A.
  
  Once a year
- B.
  
  All year round
- C.
  
  Never
- D.
  
  Once in every 100 years
19.

What are some circumpolar constellations? (more than one)
- A.
  
  Draco
- B.
  
  Aquarius
- C.
  
  Ursa major
- D.
  
  Little dipper
- E.
  
  Leo
20.

The longest day of the year is ________
21.

Static electricity only happens on conductors.
- A.
  
  True
- B.
  
  False
22.

When an atom gains an electron, it becomes:
- A.
  
  Cation
- B.
  
  Anion
- C.
  
  Onion
23.

In a circuit, the electrons flow from _______ end to ________ end.
24.

Why would you get a shock from an object?
- A.
  
  Electrons hate you
- B.
  
  Electrons want to discharge
- C.
  
  Protons jump to an opposite charged object
25.

Which is not a method of discharging?
- A.
  
  At a point
- B.
  
  A spark
- C.
  
  Friction
- D.
  
  Moisture