Skills of a Scientist
Is the following statement an observation or an inference? If I squeeze the sponge water will probably drip out.
INFERENCE: this is a conclusion based on prior knowledge and observations.
What do all living things have?
A CELL or CELLS.
What do plants produce during photosynthesis that is important for humans?
oxygen
What heat transfer happens through circulation of warm water/air rising and cold water/air sinking? Like during water boiling.
convection
The sun heats up water in the water cycle by what heat transfer?
Radiation - the sun's energy travels through rays down to the water.
Is the following statement an inference or observation? The mass of the object is 56g.
It is an observation (quantitative Observation) because it is a FACT based on measurement.
Name 2 parts a plant cell has that an animal cell doesn't.
cell wall, Chloroplast, larger vacuole.
A pencil looking bent in a glass is caused by the light that is _____________________________.
Refracted
If molecules are far apart and moving really quickly is the substance a solid, liquid, or gas?
Gas - because gases have the most heat energy which in turn make the molecules have the most kinetic energy and move fast.
Rain, snow, sleet, hail are all examples of what?
Precipitation
Is the following situation an example of the Scientific Method (SM) or Engineering Design Process (EDP)?
Sam created a holder that sits over a heating vent to make it easier to dry hats and gloves after playing in the snow.
Engineering Design Process because Sam CREATED something to solve the problem.
What cell organelle controls all the activities of the cell; the boss/brain of the cell?
Nucleus
A flower is the reproductive part of a plant. What process happens when the pollen combines with the ovules in the ovary to make seeds?
Fertilization
How can you increase an object's potential energy?
By raising the object higher.
When clouds form, what process has occurred?
CONDENSATION - water vapor cools and turns back into liquid water. Clouds are little drops of water.
In the following experiment name the independent variable and 2 constants:
Jordan wants to know how different wheels are going to affect the speed of a toy car. She tests the same car with three different wheels down the same course. In the end the one with the thickest wheels when the slowest and the one with the thinnest wheels went the fastest.
variable - different wheels
constants - same car, same course
If light passes through something we say the light was ______________________.
Transmitted
If a person was running on a road and then started to run through tall grass, do you think it would increase or decrease the person's kinetic energy?
Decrease the kinetic energy because the tall grass would probably slow the person down as they were running through it. If you decrease speed you decrease kientic energy.
What kind of weather always occurs at a warm or cold front?
CLOUDY SKIES AND PRECIPITATION - due to low pressure.
If a triple beam balance is on 200 on the middle beam, 40 on the back beam, and 6 plus 3 little spaces past 6. What is the mass?
246.3 g
When a human sweats to cool his/her body down, what GRRSNERT trait is that?
Homeostasis - responding to the environment to maintain an balanced internal environment.
What is the name of the process when a liquid is heated and turns to a gas?
Evaporation
How do you know which way a front is moving?
The triangles or semi circles are pointing the way the front is moving.