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Grade 6 Forces and Motion
Average speed is equal to                .
  1. distance/time
  2. time/distance
  3. distance + time
  4. distance * time
Grade 7 Atomic Structure
Neutrons have                   .
  1. no electric charge
  2. positive charges
  3. negative charges
  4. particles
Grade 9 Evolution
According to Darwin, evolution occurs                                 .
  1. quickly
  2. because of natural selection
  3. regularly at every 5,000 years
  4. when the organism desires change
Grade 6 Biomes
What biome has some of the richest and most fertile soil in the world?
  1. taiga.
  2. tundra.
  3. grassland.
  4. desert.
Grade 9 Properties of Matter
A chemical change refers to                                                                               .
  1. a change in matter when matter independent changes form.
  2. a change in matter that does not change composition.
  3. a change in matter that leads to melting or evaporation.
  4. a change in matter that occurs when substances combine to form new substances.
Grade 11 Reactions
You know that you have a balanced chemical equation when the                                                                                                          .
  1. coefficients of the reactants equal the coefficients of the products
  2. number of atoms of each element in the reactants equal that of each corresponding element in the products
  3. products and reactants are the same chemicals
  4. subscripts of the reactants equal the subscripts of the products
Grade 7 Biotic and Abiotic
What are biotic factors?
  1. Earth's weather and climate
  2. Non-living parts of an ecosystem
  3. Living organisms in an ecosystem
  4. Landforms and waterfalls
Grade 7 Biotic and Abiotic
What are the nonliving parts of the ecosystem such as water, dirt, and air called?
  1. abiotic factors
  2. biomes
  3. biotic factors
  4. ecological factors
Grade 5 Simple Machines
What is a pulley?
  1. a bar used to lift heavy objects.
  2. a wheel with a groove for a rope.
  3. made of two inclined planes.
  4. a lever with an arm and a fulcrum.
Grade 5 Inner Planets
Mars is the                 planet from the Sun.
  1. second nearest
  2. third nearest
  3. fourth nearest
  4. nearest
Grade 9 Forces and Motion
The weight of an object                                                   .
  1. stays the same wherever the object is.
  2. changes if the object is in motion.
  3. stays the same as long as the object is in motion.
  4. changes if the force of gravity changes.
Grade 9 Simple Machines
A device that does work with only one movement is called a                 .
  1. compound machine
  2. force
  3. pulley
  4. simple machine
Grade 6 Forces and Motion
What does Newton's third law of motion state?
  1. An object in motion stays in motion unless a force acts on it.
  2. An object's acceleration (change in speed) depends on the mass of the object and the amount of force applied on it.
  3. An object at rest stays at rest unless a force acts on it.
  4. Every action has an equal and opposite reaction.
  5. Both A and C.
Grade 6 Matter
What is sublimation?
  1. a substance used in a chemical reaction.
  2. the process by which particles leave a liquid and become a gas.
  3. the process by which a solid changes directly into a gas.
  4. a substance made by a chemical reaction.
Grade 10 Forces and Motion
If an object is resting on a table with no motion, what two forces are acting on the object?
  1. A force down from gravity and friction from the table.
  2. A force up from the table and a force down from the atmosphere.
  3. A force down from gravity and a force up from the table.
  4. A force down from the atmosphere and a force up from gravity.
Grade 7 Matter
What do you call the process of vaporization that occurs throughout a liquid?
  1. sublimation
  2. vaporization
  3. plasma
  4. boiling
Grade 5 Matter
The process by which a liquid changes to a gas is called                .
  1. condensation
  2. evaporation
  3. precipitation
  4. transpiration
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