Force and Motion
Wind is blowing from the west to the east. The wind pushes the sails of a boat and makes the boat move... A. West B. East C. North D. South
What is east?
Jenny wanted to know if tomato plants need sunlight in order to grow. What kind of investigation can Jenny do to answer the question? A. Set whole group of plants in the sun and record the results. B. Set a whole group of plants in the sun and water half of them. C. Set whole group of plans in the shade and record the results. D. Set some plants in the sun, some in the shade, and compare the results.
What is set some plants in the sun, some in the shade, and compare the results?
What will happen to small particles in a liquid that is cooled? A. The particles will become smaller. B. The particles will become larger. C. The particles will begin moving slower. D. The particles will begin moving faster.
What is the particles will begin moving slower?
Heat travels from ________ objects to ____________ objects.
hot to cold
Sound travels on ____________
waves
_________is a force that acts between two objects which are touching. This force slows any movement between the two objects. A. Gravity B. Friction C. Magnetism D. Pressure
What is Friction?
Conclusions based on evidence about events that have already occurred are... A. predictions B. inferences C. observations D. hypothesis
What is inferences?
In which of the following states of matter does a substance have a definite shape? A. liquid B. plasma C. solid D. gas
What is solid?
These materials allow heat to transfer easily.
conductors
Which of the following would produce a loud sound? A. vibrations with a large magnitude B. vibrations that are moving slowly C. vibrations that are moving quickly D. vibrations with a small magnitude
What are vibrations with a large magnitude?
When an object moves it always changes ________.
position
Before a scientific experiment can be started,__________is needed. Then, research for the experiment can begin. A. an experimental design B. a conclusion C. a testable question D. a graph or table
What is a testable question?
When a substance changes size or shape it is a ________ change
These materials do not allow heat to transfer easily.
insulators
vibrations
To measure speed you need to know __________ and ___________.
distance and time
When you are finished recoring and analzying data you can then ________________.
Draw conclusions
When the molecular structure of a substance changes it is a _________ change
chemical
These are the two types of measurement on a thermeter.
Celcius and Fahrenheit
Pitch is determined by the ______________ of a sound wave.
frequency
An objects speed and direction are called ___________.
velocity
Forecasts about what may happen in future situations are... A. conclusions B. predictions C. observations D. inferences
What is predictions?
Give three examples of chemical changes in matter
rusting, decomposing, cooking a substance, tarnish
The three ways that heat energy moves are by _____, ______, and _______.
conduction, convection, and radiation
Sound travels on ____________.
waves