WorksheetsYear 9 Science Review
Total questions: 60
Worksheet time: 45mins
What is the independent variable in a science experiment?
Anything that can change
The thing you change
The thing you measure at the end
The thing you keep the same
What is the dependent variable in a science experiment?
Anything that can change
The thing you change
The thing you measure
The thing you keep the same
You are heating a substance in a test tube. Always point the open end of the tube...
Toward yourself.
Toward your lab partner(s).
Toward another classmate.
Away from all people.
There should not be any loud talking or messing around in the lab because ____.
Your safety and the safety of others depends on your behavior.
Your teacher may have a headache.
The teacher has told you not to.
You may not be able to hear instructions.
When light travels through two different materials it bends and changes
direction because the speed of light changes. This is called __________
Reflection
Refraction
When light hits an opaque object it changes direction
and bounces off. This is called _________
Refraction
Reflection
The _________ is the hole in the centre of the iris. Light enters the eye through this hole.
pupil
optic nerve
lens
retina
1. If the light has a longer wavelength, it has a lower energy
TRUE
FALSE
What is this
opaque
Translucent
Transparent
Which of the following represents the material that allows light to pass through?
1. Transparent
2. Translucent
3. Opaque
1. Clear
2. Foggy
3. Translucent
1. Translucent
2. Transparent
3. Opaque
1. Opaque
2. Transparent
3. Translucent
Which of these best demonstrates the refraction of light?
Looking through a telescope at night.
Looking in the mirror.
Seeing yourself on your phone screen.
Watching a laser bounce off of a smooth surface.
The visible spectrum is
Colours which make up white light (ROYGBIV)
The amount of refraction that occurs when colour passes through a prism
The splitting up of white light through a prism
Also called a rainbow
This is _______________. The splitting up of white light into the colours of the spectrum
Refraction
ROYGBIV
Visible spectrum
Dispersion
This rainbow formed because
Only the droplets highest in the sky refracted all colours to our eyes
Sunlight was internally reflected from inside the droplets back to your eyes
The visible spectrum was dispersed with the sun in front of the rainbow
Only the droplets lowest in the sky refracted all colours to our eyes
The primary colours of light are
Red, blue, green
Blue, indigo, violet
Red, magenta, green
Magenta, cyan, yellow
The secondary colours of light are
Red, blue, green
Blue, indigo, violet
Red, magenta, green
Magenta, cyan, yellow
Why does this flower appear magenta to our eyes?
Only red and blue light are absorbed into our eye
Because all colours of the visible spectrum are absorbed
Because that's what colour the flower is
Only red and blue light are reflected into our eye
Which of the following is correct?
Blue + Maroon = Magenta
Green + Blue = Cyan
Red + Blue = Green
Yellow + Cyan = Green
Which colour light is being reflected?
Magenta
Red + Blue
Orange
All colours except for orange
Which pair of colours do NOT combine to make the correct secondary colours?
Red + Blue = Magenta
Red + Green = Yellow
Blue + Green = Cyan
Red + Yellow = Green
What is a scientist who studies the movement of the earth called?
tsunami
magnitude
seismologist
focus
What are the vibrations of energy flowing from the focus?
epicenter
tsunami
focus
seismic waves
The strength of an earthquake's seismic waves...
epicenter
magnitude
tsunami
focus
What do we call the place where two tectonic plates meet?
Plate
Fault
Focus
Epicenter
Who proposed Continental Drift Theory ?
Alfred Wegdener
Alfred Wegener
Alfred Weigener
Alfred Weegdener
What type of plate boundaries is this ?
Convergent Boundaries
Divergent Boundaries
Transform Boundaries
What type of plate boundary where two plates move towards each other?
Transform Boundaries
Convergent Boundaries
Divergent Boundaries
It is a famous fault form by Transform boundaries found in California
San Andres Fault
San Andreas Fault
Anatolian Faults
What type of plate boundaries is this ?
Transform Boundaries
Convergent Boundaries
Divergent Boundaries
Theory that pieces of Earth’s lithosphere are in constant motion, driven by convection currents in the mantle
Continental Drift Theory
Plate Tectonics Theory
Seafloor Spreading Theory
Plate Boundaries Theory
Which chemical tastes bitter?
Acid
Base
Which chemical tastes sour?
Acid
Base
Acid mixed with a base will __________ the mixture.
nullify
neutralize
balance
naturalize
Which pH number below reflects a weak acid?
1
6
8
13
Which pH number below reflects a weak base?
1
6
8
13
Pure water is _______ on the pH scale.
Acid
Base
Neutral
An acid is a solution that contains __________ ions dissolved in water.
positive
negative
What is the respiratory system used for?
Transporting oxygen and nutrients throughout the body
Acquiring nutrients from food
Exchanging carbon dioxide and oxygen with the environment
Exchanging carbon dioxide and oxygen with the environment
What is the cardiovascular system used for?
Transporting oxygen and nutrients throughout the body
Acquiring nutrients from food
Exchanging carbon dioxide and oxygen with the environment
Expelling waste products from the body
What is the coloured structure in the diagram?
Abdomen
Alveoli
Larynx
Diaphragm
What is the coloured structure in the diagram above?
Pharynx
Larynx
Trachea
Bronchi
In humans, gas exchange only occurs in the alveoli. The rest of the respiratory system just transports air in and out of the alveoli.
True
False
Recall the name of the heart chambers that receive blood from the veins.
Atrium
Ventricle
Vena cava
Aorta
Name the heart chamber that contracts to push blood into the arteries.
Valve
Vein
Atrium
Ventricle
Shaan has come across this labelled blood vessel in the diagram below. It is an artery that receives blood from the right ventricle, and leads towards the lungs.
Lung artery
Aorta
Pulmonary artery
Vena cava
Select the correct term for the following definition:
"Nerve cells that carry messages from receptors to the CNS"
Motor
Sensory
Relay
Select the correct term for the following definition:
"Nerve cells that carry messages from the CNS to effectors"
Motor
Sensory
Relay
What is the main function of the endocrine system?
It creates chemicals, or hormones, that are sent around the body to maintain homeostasis.
It creates electrical messages that are sent around the body to maintain homeostasis.
It maintains the correct level of oxygen in the body to maintain homeostasis.
It releases waste from the body to maintain homeostasis.
The process by which an organism’s internal environment is kept stable in spite of changes in the external environment.
Positive Feedback
Negative Feedback
Homeostasis
Targeted Cells
A _____ is a blood vessel that carries blood to the heart
blood vessel
artery
vein
capillary
Which of the following organs fits the definition?
•they carry oxygen and nutrients away from your heart to your bodies tissues
veins
arteries
lungs
heart
