Forces & Motion Part 1
What will happen?
The balls will hit the ground at the same time because gravity accelerates all objects at the same rate.
If a ball rolls at a constant rate on a flat surface, the motion is due to ________ forces.
A ) gravitational
B ) frictional
C ) electromagnetic
D) balanced
Balanced
*movement can be balanced if the object goes at a constant rate on flat surface and does not change its current movement*
A student wants to figure out a specific property about 2 objects by placing them both in the sun for 2 hours and then measuring the temperature of each object.
Which statement below did the student find was true?
A) The object that got really hot is considered a good conductor while the object that stayed cooler is considered a good insulator
B) The object that got really hot is considered a good insulator while the object that stayed cooler is considered a good conductor
B) The object that got really hot is considered a good insulator while the object that stayed cooler is considered a good conductor
Write the word of the change to the states of matter below/.
1) Solid -> Liquid = ____________
2) Liquid -> Gas = _____________
3) Gas -> Liquid = _____________
4) Liquid -> Solid = _____________
1) Solid -> Liquid = MELTING
2) Liquid -> Gas = EVAPORATION (BOILING)
3) Gas -> Liquid = CONDENSATION
4) Liquid -> Solid = FREEZING
Which phase of the engineering design process entails deciding on the materials and shape of a vessel?
A) Design Process C) Evaluation Process
B) Definition Process D) Improvement Phase
A) Design Process
Object 1 Object 2 Object 3
20g 40g 50g
If you threw each of these objects with 25N of force, which one would go the furthest distance?
Object 1
Lighter objects will travel further distances than heavier objects when both are thrown with the same amount of force.
Pistons in an engine move to keep a car in motion. What would most likely to the pistons if the oil dries up.
A) The pistons would speed up because there would be less friction.
B) The pistons would slow down because there would be less friction.
C) The pistons would speed up because there would be more friction.
D) The pistons would slow down because there would be more friction.
D) The pistons would slow down because there would be more friction.
Atoms are very small. Most of an atom's volume is _________________.
A. from the electrons
B. empty space
C. based on its protons
D. both electrons and neutrons
C) Empty Space
A ____1_____ is used to measure the volume of a solid
A ____2_____ is used to measure the volume of a liquid
A ____3_____ is used to measure a substance's mass
1- Ruler
2- Graduated Cylinder
3 - Scale or Triple Beam Balance
If you are designing a boat and your design fails (aka, your boat sinks) what is something you should do to improve your boat?
A) Keep trying the experiment with the same boat without making changes.
B) Build the same boat using different materials.
C) Create a new design that improves the boat in the places where the boat initially failed
C) Create a new design that improves the boat in the places where the boat initially failed
Four people in an airport are pushing carts from terminal A to terminal B. Their masses are below.
Cart 1 Cart 2 Cart 3 Cart 4
100g 25g 49g 175g
If each person pushes their cart with the same amount of force, who would...reach terminal B first? Who would reach terminal B last?
First - CART 2 (lightest cart) (least amount of friction occuring between wheels and floor)
Last - CART 4 (heaviest cart) (most amount of friction occuring between wheels and floor)
A ball is pushed off the edge of a table onto the floor. The ball falls faster and faster as it comes down.
What factor causes the motion of the ball to change as it falls to the floor?
A) the force of gravity
B) the mass of the ball
C) the height of the table
D) the force applied on the ball from the push
A) the force of gravity
Determine whether each material is either an Element, Molecule, or Compound
Silver - ____________ Ag
Oxygen Gas - ___________ O2
Water - ______________ H2O
Aluminum - _____________ Al
Table Salt - _____________ NaCl
Hydrogen Gas - ______________ H2
Silver - ELEMENT - Ag
Oxygen Gas - MOLECULE - O2
Water - COMPOUND (aka Molecule) - H2O
Aluminum - ELEMENT - Al
Table Salt - COMPOUND (aka Molecule) - NaCl
Hydrogen Gas - H2
Four glasses have the same liquid inside them with each glass's volume being listed below.
Glass 1 Glass 2 Glass 3 Glass 4
10ml 5ml 25ml 30ml
True or False?
The molecules in glass 4 are larger in size than the molecules in glass 2.
False
All molecules made of the same material are the same exact size, there are just more molecules inside glass 4 than there are in glass 1.
Hank was driving his pickup truck down a dirt road. His dog was riding in the bed of the truck.
All of a sudden, a opossum ran out in front of the truck. Hank slammed on the brakes to avoid hitting the opossum. This created an unbalanced force acting on the dog in the bed of the truck.
How would the force affect the dog?
A. The dog would slide to the right side of the truck bed.
B. The dog would slide to the left side of the truck bed.
C. The dog would slide to the front of the truck bed.
D. The dog would slide to the back of the truck bed.
C. The dog would slide to the front of the truck bed.
Five cars are racing down a track to cross a finish line.
Using the information below, list the cars in order of fastest speed to slowest speed.
Car 1 - crossed finish line in 24 mins
Car 2 - crossed finish line in 35 mins
Car 3 - crossed finish line in 90 mins
Car 4 - crossed finish line in 33 mins
Car 5 - crossed finish line in 34 mins
Fastest ----------------------- Slowest
Car 1 , Car 4 , Car 5 , Car 2 , Car 3
Which is an example of a noncontact force causing the motion of an object?
A) magnet attracting a nail
B) person holding a bucket
C) bird flying up into a tree
D) piece of tape repairing a ball
A) magnet attracting a nail
The chemical formula for glucose, a sugar, is C6H12O6 . The compound of glucose contains ___________ atoms.
Carbon - 6
Hydrogen - 12
Oxygen - 6
6+ 12 + 6 = 24
A student took two objects with the same shape and made of the same material and dropped them into a glass of water.
Which statement below is true about these two objects?
A) The larger sized object will sink and the smaller sized object will float since size changes an object's density
B) Both objects will do the same thing since they are made of the same material since size does not change an object's density
B) Both objects will do the same thing since they are made of the same material since size does not change an object's density
One drop of water has the same density as a bucket of water. All water has a density of 1 g/ml.
When a rocket is launched, the force of the gases expelled downwards pushes the rocket
upwards. What would likely happen if the rocket expels gases equally in all directions?
A. The rocket will move downwards.
B. The rocket will move to the left.
C. The rocket will move to the right.
D. The rocket will remain stationary.
D. The rocket will remain stationary.
Which action results in increased friction?
A) adding wax to skis
B) polishing a metal surface
C) applying sand to a road
D) applying grease to a bicycle chain
C) applying sand to a road
A) Friction
B) Balanced forces
C) Magnetism
D) Gravity
D) Gravity
Fill in the blanks with the correct word.
_______ are the smallest units of matter that retains all of the chemical _________ of an element?
ATOMS are the smallest units of matter that retains all of the chemical PROPERTIES of an element?
Find the volume of the rock using the information below.
No Rock Yes Rock
Graduated Cylinder 1st Graduated Cylinder 2nd
215 ml 358 ml
VOLUME= ___________ml
143 ml
A student finds that maple syrup sinks in water. The density of water is 1 g/cm and the density of maple syrup is 1.33 g/cm .
What would likely be the density of vegetable oil if it floats on water?
A. equal to 1.0
B. less than 1.0
C. greater than 1.33
D. between 1.0 and 1.33
B. less than 1.0