Gravity/Free Fall and CER

Question 1

Gravity:

Answer 1

the force that pulls objects towards the Earth

Question 2

Newton realized that…

Answer 2

a force acts to pull objects straight down towards the center of the Earth

Question 3

Universal Law of Gravitation:

Answer 3

any object that has mass will be attracted to another object

Question 4

If the mass of one or both objects increases…

Answer 4

gravitational force (attraction) between them increases

Question 5

If the distance between two objects increases…

Answer 5

gravitational force (attraction) between them decreases

Question 6

There is gravitational force (attraction) between any two masses but…

Answer 6

it goes unnoticed except when one or both of the objects have a HUGE mass

Question 7

Gravity depends on…

Answer 7

distance and mass

Question 8

Gravity increases as mass…

Answer 8

increases

Question 9

Gravity increases as distance…

Answer 9

increases

Question 10

Large objects have…

Answer 10

lots of gravity

Question 11

Close objects have…

Answer 11

lots of gravity

Question 12

Small objects have…

Answer 12

little gravity

Question 13

Far objects have…

Answer 13

little gravity

Question 14

Free Fall:

Answer 14

the motion of a falling object when the only force acting on it is gravity

Question 15

Near the surface of the Earth, the acceleration (rate) due to the force of gravity is…

Answer 15

9.8 m/s/s

Question 16

Any objects fall at this rate regardless of…

Answer 16

mass

Question 17

Time: 1 second ———>

Answer 17

Velocity: 9.8 m/s

Question 18

Time: 2 seconds ———>

Answer 18

Velocity: 9.8 m/s x 2 = 19.6 m/s

Question 19

Time: 3 seconds ———>

Answer 19

Velocity: 9.8 m/s x 3 = 29.4 m/s

Question 20

Time: 4 seconds ———>

Answer 20

Velocity: 9.8 m/s x 4 = 39.2 m/s

Question 21

Air Resistance:

Answer 21

a type of fluid friction that objects experience when falling through the air

Question 22

All gasses are…

Answer 22

fluids

Question 23

All liquids are…

Answer 23

fluids

Question 24

Ex. of air resistance:

Answer 24

a leaf floating to the ground vs. an acorn falling to the ground. The leaf “floats” similar to an open parachute

Question 25

Air resistance increases with...

Answer 25

velocity

Question 26

Terminal Velocity:

Answer 26

the greatest velocity a falling object reaches (air resistance equals the force of gravity)

Question 27

A leaf and an acorn have the ____ gravity when falling:

Answer 27

same

Question 28

An acorn has _______ air resistance compared to a leaf when falling:

Answer 28

smaller

Question 29

Objects with larger surface area reach terminal velocity...

Answer 29

quicker

Question 30

Claim:

Answer 30

the answer/conclusion to a scientific question, problem, or phenomena that is being observed or investigated

Question 31

A claim should not have...

Answer 31

any explanations or reasoning

Question 32

A claim should be...

Answer 32

brief and to the point

Question 33

Evidence:

Answer 33

information/data from a textbook, dictionary, primary source, lab activity, internet source, etc, that supports the claim (the PROOF that supports the claim)

Question 34

Example of evidence:

Answer 34

Ex. 1 - a definition from the dictionary Ex. 2 - a concept from a science textbook - an object at rest/not moving, will stay at rest, until acted on by another force Ex. 3 - a diagnosis (word for word) from a doctor at a hospital Ex. 4 - data measured from a science lab activity Ex. 5 - an observation from a picture phenomenon Ex. 6 - an audio recording Bill Nye the Science Guy or V.P Kamala Harris

Question 35

Reasoning:

Answer 35

a detailed explanation of how the evidence supports the claim

Question 36

In a reasoning, make sure to...

Answer 36

- restate the the claim within your reasoning & discuss any data - list & describe the evidence - specifically state definitions & describe why they are important - explain a science concept and its significance - make connections to the claim & the evidence ... elaborate & give details

Question 37

Example sentence starter for reasoning:

Answer 37

Based on the following evidence, one can conclude...

Question 38

Using CER will help you to...

Answer 38

communicate scientific information more effectively, answer questions accurately, engage in scientific argument, help one to critically think about the scientific process ... asking questions, solving problems, analyzing data, making measurements, etc.