Heat & Energy
Stirring a metal spoon in a hot cup of tea causes the spoon handle to become hot. Which type of heat transfer does this demonstrate?
Conduction
What two concepts are being described here:
1. The shape of an object
2. The purpose of an object
Form & Function
When mixing two substances, what is the substance that is doing the dissolving called?
Solvent
Classify the following as either Biotic or Abiotic: Water, Trees, Rocks, Birds
Biotic: Trees, Birds.
Abiotic: Water, Rocks.
When designing a solar oven, what types of colors and should you use to absorb the most amount of energy from the sun?
Darker materials because they absorb light best, while light, shiny materials reflect it.
Name the changes of state when a solid turns directly into a gas, and when a gas turns directly into a solid
Sublimation (solid to gas) and Deposition (gas to solid)
The Eiffel Tower, a bicycle, and the skeleton frame of a house belong to what classification of structure?
Frame structures - they use a network or skeleton of materials that support each other
If you add sugar to a cup of tea and it dissolves completely, the solution is __________.
If you keep adding sugar until it can no longer dissolve and collects at the bottom, the solution is __________.
Unsaturated
Saturated
Write down the basic word equation that represents the process of Photosynthesis.
Sun + Water + Carbon Dioxide ➔ Sugar (Food) + Oxygen
You are given a bucket filled with a mixture of salt, rice, iron staples, and grapes. What physical property tool would you use first to easily pull out the staples?
A Magnet (separating via magnetism).
Which types of matter does conduction work best in?
liquids and gases
Which internal force is defined by an internal twisting force?
Torsion
What are the TWO names for a substances that contains two or more substances that are evenly mixed and look like only one thing
Homogeneous mixture
Solution
What is the name for a relationship where both organisms benefit from the interaction?
Mutualism
Helmets, eggs, and igloos are incredibly strong despite being light and hollow. What category of structure are they?
Shell structures
What is being described here:
An increase in the volume of a substance caused by adding heat (the particles absorb energy, move more quickly, and spread further apart).
Thermal Expansion
What is the internal force that presses or squeezes the particles of an object together? Give a daily life example
Compression - Example: Squeezing a lemon or sitting on a chair cushion
When mixing a sugar into water, list ONE way you can speed up the process of dissolving
2. Stirring faster
3. Crushing the sugar into smaller pieces
What is the name for a diagram that shows how much energy is passed on at each level of the food chain?
Energy pyramid
What natural phenomenon involves the Earth's atmosphere trapping some of the Sun's energy to keep our planet warm enough to sustain life?
The Greenhouse Gas Effect
State at least 3 of the 5 main postulates of the Particle Theory of Matter.
1) All matter is made of particles;
2) Particles are always moving;
3) There are spaces between particles;
4) There are forces of attraction between particles;
5) Temperature affects the speed at which particles move.
What is the term used to describe the process of designing structures to improve comfort and efficiency
Ergonomics
What is the name for a pure substances that is made up of different elements that are chemically bonded together?
Compound
A tick attaching itself to a dog to feed on its blood is an example of what ecological interaction?
Parasitism - an interaction where one organism benefits and the host organism is actively harmed.
When drawing a force diagram, what force will ALWAYS be represented and in what direction is it applied?
Gravity will always be pulling down