Energy
Collisions
Forces
Experiment Design
Random
100
Describe 3 examples of potential energy
food, battery, a bow pulled back, something at a height
*stored energy not yet in use
100
Name 3 ways to decrease impact force
increase collision time (padding), decrease mass, decrease velocity
100
Define acceleration
change in velocity; speed up/slow down/change directions
100
What is a dependent variable?
Something that you observe or measure
100
How many bones does an octopus have?
zero. They are invertebrates - no bones!
200
Describe how kinetic energy changes as speed decreases:
KE decreases as speed decreases
200
Newton's 3rd law states:
In a collision, forces exerted are always ____________ in strength and ______________ in direction.
equal; opposite
200
Which object would require a stronger force to accelerate to 2 m/s and why?
A 8 kg lamb or a 4 kg baby pig?
baby lamb because it has more mass (larger mass requires stronger force to cause the same acceleration)
200
What is an independent variable?
Something that you change/compare in an experiment
200
What is the name of this hippo? (approximate spelling will be accepted)
Moo Deng the viral pygmy hippo from Thailand
300
A pinecone falls from the top of a tree.
What is happening to its potential energy and kinetic energy as height decreases? 
The potential energy is transferred and converted into kinetic energy
300
If car hits a fly while moving, does the fly exert a force on the car? Why?
Yes because in a collision, there is always an equal and opposite reaction on both objects.
300
Which direction will this box move and why?
Right; because the forces are unbalanced
300
What is a control variable?
Something(s) that you keep the same in experiment so that you can clearly see cause & effect
300
What is the name of the hurricane that is currently affecting the southeast part of the US? (currently means as recent as last week and the week before)
Hurricane Milton
400
Which object has more gravitational potential energy: The object at a height of 1 meter OR the object at 5 centimeters? WHY?
The object at 1 meter, because gravitational potential energy increases when you go against the force of gravity - more height stores more potential energy.
400
Name and describe one way to protect an egg during the egg drop
Padding / springs/ foam blocks /trestles- increase collision time
use lighter materials (decrease mass)
use a parachute (decrease velocity)
400
Which of the following numbered boxes will not experience a change in velocity?
#3 because the forces are balanced
400
In an experiment to test how different surfaces affect the speed of a rolling ball, what is the independent variable?
type of surface used
*friction of surface is ok
400
What is the largest organ in the human body?
*organ: a group of tissues that work together to perform a specific function in an organism
Skin
500
Identify and briefly explain which points shows the greatest KE and PE in the model below:
KE: D because all the potential energy has been converted to kinetic energy
PE: A because it is the tallest point so there is the most stored energy
500
A 15 kg inflatable raft bumps into a 21 kg canoe. Which will experience a greater acceleration after the collision?
The raft will experience a greater acceleration because it is lighter. Objects with less mass will accelerate more given the SAME force.
500
The impact of the force exerted by the ball is represented by the depth of the hole it makes.
If the 15 g ball is thrown at 8.4 m/s, how deep would you expect the hole to be?
Between 1.14 cm and 0.96 cm.
500
Tara got a slingshot for her birthday, and she was learning to use it by launching a rubber ball in a local park.
She wondered how much farther the ball would travel for each additional inch she pulled the sling back.
Tara launched the ball from the slingshot six times and measured how far the ball traveled each time.
What is the independent variable?
the distance the sling is pulled back
500
Who won the grammy for best album this year?
Taylor Swift