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Worksheets10 SCI Semester 2 Exam Revision- Physics and Earth Science
Total questions: 30
Worksheet time: 1hrs 3mins
This is a displacement graph, does the person return to their original location?
yes
no
after 10 mins
cannot tell
this is a speed over time graph, which section is the person decelerating?
0-1
1-3
3-6
6-8
what could you say about this graph?
the object is constantly decelerating
the object is constantly accelerating
the object speeds up quickly then stops
the object is stationary
what is the acceleration of this object?
1m/s/s
1m/s
1km/hr
6m/s
Frank is going down a water-slide ride, what is happening to his kinetic energy as he goes down the slide?
kinetic energy increasing
kinetic energy decreasing
kinetic energy remains the same
kinetic energy is irrelevant here
Frank is going down a water-slide ride, what is happening to his gravitational potential energy?
gravitational potential energy increasing
gravitational potential energy decreasing
gravitational potential energy is not real
gravitational potential energy does not exist in theme parks
Sarah is a runner. Her speed goes from 5m/s to 60m/s in 5 seconds. What is her acceleration?
12m/s
11m/s sq.
10m/s
10m/s sq.
There are chemicals in the atmosphere that are needed to assist with photosynthesis. What are they?
carbon dioxide
oxygen
nitrogen
all of the above
What is the O-zone layer made of?
olives
oxygen
nitrogen
carbon
What is contributing to increased carbon in the atmosphere?
too many people swimming in the ocean
deforestation
photosynthesis
respiration
energy cannot be created or destroyed, it can only be ....
transmitted
transferred
swapped over
changed form
the law of conservation of energy states that energy...
cannot be created or destroyed
takes us to infinity and beyond
is gooood for me
can be deleted
newtons first law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
true
false
the formula 'f=m x a' relates to what?
conservation of energy
newtons 1st law
newtons 3rd law
newtons 2nd law
select all statements correct about GRAVITY
=9.81
there is less gravity in space
something above the ground has gravitational potential force
gravity is not real
when Miss throws a ball, what explains why it eventually falls to the ground?
force of gravity pushing down on ball
heat energy
decreasing elastic energy
sound energy
newtons 3rd law states that for every action there is an equal and opposite reaction.
true
false
what does this image represent?
Newtons 3rd law
newtons 1st law
newtons 2nd law
conservation of energy
kinetic energy relates to
movement of things
gravitational potential
elastic energy
burning things
the girl on the swing has kinetic energy when she is moving. where does she have more gravitational potential energy?
at the bottom of the swing
on the ground
when she is swinging the highest
when shes walking around
gravitational potential energy: mass x gravity x height
(Ep= mgh).
Calculate Potential energy: girl on swing weighs 50 kg and swings 2m high (gravity 9.8).
980J
98 Newtons
9.8 m/s
988 kJ
If a girl on a swing has 980J of gravitational potential energy, how much kinetic energy does she have?
980J
0J
9.81m/s
more because shes moving
what type of energy does the ball have in the left picture?
kinetic
gravitational potential
sound
elastic potential
what type of energy does the ball have in the image on the right?
kinetic energy
sound energy
elastic potential
heat energy
what is true about the ball as it falls? choose 2.
gravitational potential energy decreasing
kinetic energy increasing
sound energy lost
heat energy gained
Air is 78% nitrogen, but most living things cannot use nitrogen when it is in the form of a gas. Where do living things get their nitrogen from?
from the soil, or eating plants/ animals
from the carbon cycle
from the atmosphere
from eating their crusts
The carbon cycle is essential for life, how does carbon from the atmosphere get in animals?
carbon is a part of what makes up animal tissues and organs
animals breathe too much
carbon is only found in the atmosphere
greenhouse gases pollute the world
why is too much carbon dioxide bad in the atmosphere?
increases temperature of the planet by trapping heat
its a good thing
too many people will go swimming
we need it to breathe
How can we reduce greenhouse gases? select all correct answers.
use less energy
reduce, reuse, recycle
use renewable energy
re-plant trees
I believe in you all, I am so proud of you!
I am sure you will all do fine in the exam! :)
Thanks Miss
Cheers Miss
