Sound
Light
Solar System
Force and Motion
Ecosystems
100
Sound is a form of energy that is produced by..?
Vibrations
100
Students observe how light interacts with different materials and record what they see in a data table.
Which material would be entered into the empty box on the data table?
Glass
100
Earth rotates on an imaginary line called what?
Axis
100
A fourth grade class with 24 students is playing tug of war with a rope against their teacher. What describes the expected outcome?
The 24 students will win since the forces are unbalanced because they will have more force pulling on their side compared to the one teacher.
100
A food chain shows the....
transfer of energy
200
Sound travels in_____ and cannot travel without_____.
Waves, a medium or material
200
When objects stop light and light passes around on other sides of the object, it causes
A shadow
200
A force that tries to pull two objects towards each other.
gravity
200
When the sound wave bounces back it is reflected and sounds like the original sound.
What is an Echo?
200
What best describes the role of the water lily?
The water lily is a producer because it makes its own food.
300
The back and forth movements of an object. They can be powerful, weak, fast or slow.
What are Vibrations?
300
Students can demonstrate reflection by doing which of the following?
A. Warming metal under a heat lamp.
B. Enlarging an image using a hand lens.
C. Measuring a shadow made by the Sun.
D. Observing their own image in still water.
D. Observing their own image in still water.
300
During the winter season, which direction does the Northern Hemisphere point in relation to the Sun?
Away from the Sun
300
A student is trying to move boxes of books. All of the books are the same size and weight. One box has 2 books and another box has 10 books. What evidence could you use to support the claim that you need more force to move the box with 10 books?
It will take more force because the box with 10 books weighs more.
300
The graph shows the sizes of the two populations. The moose is the prey. The wolf is the predator.
Using the graph, which statement describes the changes in the ecosystem between 1965-1070 and between 1985-1990?
When the population of wolves becomes scarce, the population of moose increases.
400
The strength of the vibrations affect...
its volume
400
This material lets some light pass through but light scatters in all directions.
What is a Translucent object?
400
Stars are hot, glowing balls of ______.
gas
400
Max must help his brother move their new stove into the house. He must help unload the stove from the truck, put it on a moving cart, prop open the front door of the house and unload the stove in the kitchen.
Materials Max Has:
Inclined Plane
Wheel and Axle
Wedge
From the list above, what question should Max ask to figure out whether he should use the wheel and axle to move the stove from the truck?
Will I need to roll the stove from the truck to the front door?
400
In a forest ecosystem, disease killed many of the rodents. What is most likely to occur after this happens?
The numbers of owls will decrease.
500
To change the pitch of a sound you need to change the.....
Speed of the vibrations
500
A card with writing on it is viewed through a jar with water in it. Part of the writing on the card appears to be changed.
The change in the appearance of the writing is the result of?
Refraction
500
What moon phase follows a full moon?
Waning Gibbous
500
. A student is helping their parents set up a bedroom in a loft. The staircase to the loft is circular, so the parents realize that they will not be able to carry the furniture upstairs.
What question should the student ask the parents to help them figure out how to solve this problem?
Can we create a pulley system to attach the furniture and pull it up to the loft?
500
A widespread forest fire burned down most of the eucalyptus trees. How would this affect the community?
The koala population would also go down because they would have no food to eat, therefore, also decreasing the dingo population since they would have fewer koalas to eat.