Matter & Energy
This state of matter has a definite volume but takes the shape of its container.
Liquid
In a mixture of sand and iron filings, which physical property allows you to separate them easily?
Magnetism
If two students pull on a rope with equal force in opposite directions, what happens to the motion of the rope?
The rope stays still
What is required for an electrical circuit to be "functioning" and turn on a lightbulb?
A closed/complete circuit
How long does it take for Earth to complete one full rotation on its axis?
Approximately 24 hours
If an object has a mass of 15g and displaces 5mL of water, name the tool used to find its mass.
A Triple Beam Balance or Digital Scale
When salt is stirred into water, it seems to disappear. What is the name of this type of mixture?
A Solution
In a balloon rocket investigation, what is the force that pushes the balloon forward?
Air pressure
When light hits a mirror and bounces off, this is known as...
Reflection
This V-shaped landform is created by the long-term erosion of moving water.
A Canyon
An object is placed in a tank of water and sinks to the bottom. Compare its relative density to the water.
The object is more dense than the water
True or False: When 5g of sugar is dissolved in 100g of water, the total mass of the solution is 105g.
True
A car is rolling down a ramp. To test the effect of friction, what is the one variable you should change?
The surface of the ramp
Electrical energy can be transformed into these four types of energy in a circuit.
Motion (Mechanical), Light, Sound, and Thermal energy
Sedimentary rocks and fossil fuels both require these two things over millions of years to form.
Heat and Pressure
List two materials that would be excellent insulators of thermal energy.
Possible answers: Rubber, Plastic, Wood, or Styrofoam
Name a physical property of water that remains the same after it is mixed with sand.
State of matter (liquid), color, or density
Patterns of motion: If a ball is rolling across a flat floor and eventually stops, what force caused this change?
Friction
When you see a straw look "broken" in a glass of water, what is happening to the light?
Refraction
As the Sun "moves" across the sky, what happens to the shape and position of a tree's shadow?
The shadow changes position and length
A student classifies a mystery object as a metal. Which physical property—solubility or magnetism—likely helped them decide?
Magnetism
Explain why lemonade is considered a solution rather than just a simple mixture.
Because the ingredients (sugar/lemon juice) dissolve and spread out evenly, and the substances cannot be easily filtered out
Design a simple experiment to see how the mass of a toy car affects its speed down a ramp.
Use the same ramp and height, but test cars with different weights (adding pennies) and measure how far or fast they go
Light travels in what kind of path?
A straight line
Which agent of change (Wind, Water, or Ice) is most likely responsible for forming a sand dune?
Wind
Explain how a substance's physical state changes if you remove enough thermal energy from a liquid.
The liquid will freeze and become a solid
Describe a plan to separate a mixture containing water, salt, and pebbles.
Use a sieve/filter to remove pebbles; 2. Use evaporation (boiling) to remove the water and leave the salt behind
How does an unequal force acting on a stationary object affect its energy?
It causes a transfer of energy, resulting in the object changing its position or speed
Identify the part of a circuit (Battery, Wire, or Switch) that acts as the energy source.
The Battery
Describe the process of how a Delta forms at the mouth of a river.
Moving water carries sediment (deposition)