WorksheetsSink or float? Displacement quiz. https://youtu.be/seDsizwc
Total questions: 22
Worksheet time: 11mins
What is the video about?
Forces
Mass
Gravity
Why things sink or float
What is the first thing that floats?
Smilenita (a smiling yellow toy)
Seanceritops (A plastic dino)
A marble
An angry green fish called Jamie
What is the first thing that sinks?
A dino
A marble
An iron rod
the teacher
What is Jackazard's (the Chararizard) hypothesis about why things sink or float?
He thinks less dense things float
He thinks heavier things sink
He thinks lighter things sink
He thinks prettier things sink and thinks Jess would sink the faster of all
Why is Charizard's hypothesis incorrect?
Because heavy things don't sink
Because if something is heavy has nothing to do with it sinking
Because physics is a balance and weight is only half of the balance
Because gravity doesn't work in water
What example of a heavy thing that floats is given?
A ball
A marble
A cruise ship
An airplane
What is displacement?
Not placement
How hard gravity pulls
How much water something pushes away when it sinks
How much pizza Charlene can eat
What would displace more water, an elephant or a ping-pong ball?
A ping pong ball
an elephant
they would both be equal
neither would displace any water at all
What force pulls things down toward the center of the Earth?
friction
gravity
motion
velocity
Why do ping-pong balls float, but elephants sink?
Ping-pong balls displace more water
Ping-pong balls have less mass than the water they displace
elephants displace more water
elephants have more mass
Things that have less density are more likely to float. Why?
They have more volume for the same amount of mass
They have less mass
They are pulled down less by gravity
They produce less friction
What elements make up water?
Oxygen and sulfur
Oxygen and carbon
Hydrogen and oxygen
Hydrogen and carbon
If something has a mass of 1kg and could push away 2kgs of water, what will happen to it?
It will sink
It will float
It will fly like an eagle
It will neither sink nor float
Which marble displaces more water?
The smaller marble (one with less volume)
The bigger marble (one with more volume)
They displace the same amount of water
Each displaces more than the other
What equipment will the experiment use?
Scissors
A bowl
markers
paper
a microscope
How many marbles did it take to sink the sheet of paper?
1
2
3
4
What variable would we use in our experiment?
How high the walls/sides of the boat are
How fast the boat is
How many marbles we use to sink it
How much water we use
What outcome shall we measure?
How high the boat sides are
How much water we use
How many marbles it takes to sink the boat
The velocity of the boat
What key science facts will be in our hypothesis and conclusion?
p=f/a
F=mxa
Velocity and mass
Gravity and displacement
What kind of graph would best fit my results?
A line graph
A bar graph
A pie chart
A pictogram
There are two objects. Object 'A' pushes away 3 Kgs of water and has a mass of 2.45kgs. Object 'B' pushes away 8kgs of water and has a mass of 12kgs. Which, if any, float.
Both A and B float
Both A and B sink
A floats, B sinks
A sinks, B floats
Why do cruise ships float?
They have a low mass
They balance gravity with friction
They displace a volume of water greater than their mass
They are made of low-density materials like steel.
