Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
34 Cards in this Set
- Front
- Back
|
How many variables should be in scientific investigation? |
Scientific investigations should only have 1 variable |
|
|
What do scientist have to do to make sure their work is considered valid ? |
Scientist must publish their investigations in a journal for their work to be considered valid |
|
|
Should their be alot of trials in an investigation or not many? |
Many trials are necessary for experiments to be valid |
|
|
What is the problem in an investigation? |
The question of why or how becomes the problem |
|
|
What is a hypothesis in an investigation? |
The prediction to the problem must be testable |
|
|
What is the experiment in a investigation? |
Testing the hypothesis in a step by step procedure |
|
|
What is a control group in an investigation? |
The group that is not tested but used for comparison to the experiment group |
|
|
What is the experimental group in an investigation? |
Is the independent and dependent variables. |
|
|
What is the independent variable in an investigation? |
Is the factor that is changing in the experiment |
|
|
What is the dependent variable in an investigation? |
Factor that is measured data |
|
|
What is the constants in an investigation? |
Its whats staying the same. |
|
|
Whats the data in an investigations? |
Its whats collected in the data table |
|
|
What are the results in an investigation? |
Its the graphs of data line or bar graphs |
|
|
What is surface tension? |
Surface tension is the tension of the surface film of a liquid caused by the attractions of the particles in the surface layer by the bulk of the liquid which tends to minimize surface area. |
|
|
What is cohesion? |
The action or fact of forming a united hole. |
|
|
What is the claim in an investigation? |
A claim in an investigation is the answer to your question |
|
|
What is evidence in an investigation |
Evidence is the scientific data that supports your claim. |
|
|
What is the reasoning in an investigation? |
Is a statement or conclusion that supports your original question. |
|
|
A truck goes from taco bell to burger king in 18 seconds and the distance from taco bell to burger king is 150m what is the velocity of the truck in this time? |
6.40m/s |
|
|
A train goes from Palatka to Crescent city in 13 seconds and the distance between the two is 500m what is the velocity? |
v=38.47 |
|
|
A car accelerates at a distance of 50 meters in 5 seconds what is the acceleration? |
A= 50m/s2 |
|
|
Acceleration= 30m/s - 10m/s/3s - 1s? |
10 m/s2 |
|
|
A= 8m/s/2s? |
F=4m/s2 |
|
|
F= 2kg(4m/s) |
8 m/s2 |
|
|
What is mechanics in science? |
The study of motion of the objects. |
|
|
What is Kinematics? |
Is the science of deserting the motion of objects using words. |
|
|
What are Scalers? |
Are quanities that are fully described by a magnitude. |
|
|
What are Vectors? |
Are quanities that are fully described by both magnitude and direction. |
|
|
What is distance? |
Distance is a scaler quanity that refers to how much ground has been covered. |
|
|
What is displacement? |
Displacement is a vector quanity that refers to how far out of place an object is. |
|
|
What is speed? |
Speed is a scaler quanity that refers how fast an object is moving |
|
|
What is velocity? |
Velocity is a vector quanity that refers to the rate at which an object changes its position. |
|
|
What is instantanious speed? |
The speed at any given at any instant in time. |
|
|
What is average speed? |
Its the average of all instantanious speed found simply by distance/time |
