SPEED
What tools are needed to measure speed?
Distance: Measuring tape/ meter stick/ ruler/Trundle Wheel
AND
Time: Stopwatch/ clock
How is sound produced?
By vibrations
that cause sound waves.
How does heat transfer?
From warmer areas/objects to cooler areas/objects.
What is position?
What causes a position change?
A place where something is located.
Motion
When you compare data, what MUST BE THE SAME??
same tools and same units of measure.
To determine speed, what TWO things do you need to measure?
Time and distance
What other form of energy is causes sound energy?
Energy of motion. (mechanical energy)
What is a conductor?
What material is a good conductor?
A material that allows heat to move through it easily.
Metal
What is direction?
The way something is facing or a way in which something has moved which is evidence of motion.
What is an observation?
something that has been seen, heard or noticed. just stating a fact.
When using the same distance track and comparing the speed of 2 two cars, what data is needed to determine which had more speed?
The TIME it takes each car go from the start to finish line.
What is occurring when we observe a high pitch?
Vibrations are moving quickly
the sound waves are closer together.
What is an insulator?
or
What material is a good insulator?
An object that slows the transfer of heat, (does not allow heat to move through it easily)
Wood
Describe the marshmallow flyer's direction if it was launched, hit the ceiling then fell back to the floor.
Its direction went UP then STRAIGHT DOWN.
What is an inference?
An educated claim or explanation based on an observation, data, and other evidence.
When comparing speeds, what must be the same?
the UNIT for time (Ex. seconds, minutes, hours)
and UNIT distance (Ex. inches, meters, miles)
How is low pitch made?
vibrations are slower because sound waves are farther apart.
When measuring how much heat was present in the greenhouse Ms. Liggins and Maria got very different results/numbers. What may be the reason?
A. They placed their houses in different locations
B. They used different house wall materials
C. They used different types of thermometers
C. They used different thermometers to measure (Celsius vs. Farenheight)
If something moved while you weren't watching, how would you be able to tell it had been in motion?
It might have a new position or direction.
The class rolled a ball across carpet, tile, and wood floors. They measured how far the ball traveled on each different surface.
What question were the students trying to answer?
A. Does the shape of the classroom change the ball’s speed?
B. Does the ball roll faster when more students are watching?
C. Does a ball roll farther if it is a certain shape?
D. Does the type of surface affect how far a ball will roll?
D.
Who has the FASTEST speed if 2 people raced for 30 seconds.
A. The person with a greater distance
B. The person with the lesser distance
A. The person with a greater distance measured in the same amount of time (30 seconds) is the fastest.
There is a cat laying on top of a drum and no sound is observed. Why might this be?
When a cat lays on a drum it stops the vibrations which stops the sound.
No motion/vibrations = No sound
What material should Ms. Liggins place the hot dip in to best insulate the heat?
A. A glass bowl
B. A steel bowl
C. A wooden bowl
D. An aluminum bow
A wooden bowl
Why do you need to know the STARTING and STOPPING points of each race car during a race to be able to determine motion?
You can't determine the speed at which each travel without knowing the distance traveled
Maria walked into the classroom with wet hair and water dripping from her backpack. She quickly hung up her jacket and grabbed a handful of paper towels.
What can you infer happened to Maria?
A. She spilled juice on her backpack.
B. She walked to school in the rain.
C. She was swimming before class.
D. She dropped her backpack in the sink.
B