Matter
When an ice cube melts, which of the following is NOT happening?
A. The temperature is rising
B. Heat is being added
C. Thermal energy is taken away
D. A solid is turning into a liquid
C. Thermal energy is taken away
A mixture -
A. Maintains its physical properties when combined
B. Dissolves after being stirred together
C. Will evaporate after a certain period of time
D. Cannot be separated into ingredients
A. Maintains its physical properties when combined
Rubbing your hands together creates which type of force?
A. Gravity
B. Pushing
C. Friction
D. Pulling
C. Friction
Electrical lights will not come on unless their electrical circuit is a --
A. parallel circuit
B. series circuit
C. closed circuit
D. short circuit
closed circuit
The energy used to move most bicycles is an example of what type of energy?
A. electrical
B. mechanical
C. chemical
D. nuclear
mechanical
Cork floats in water because
A. It has a greater density than the water
B. It is too heavy to sink to the bottom
C. It mass will not allow it to sink
D. Its density is less than water
D. Its density is less that water
True or False? A solution can be made by combining vegetable oil and water.
False
A force can -
A. make an object move
B. slow and object down
C. make a moving object stop
D. all of these
D. all of these
A fifth grade class constructed a circuit. Which object can replace the wires to make the light glow?
A. plastic straw
B. cotton string
C. aluminum foil
D. rubber eraser
aluminum foil
A family was vacationing in the mountains in a cabin that had no electrical power. They needed boiling water in order to prepare dried soup mix. With no electrical energy available, which method would most likely provide enough thermal energy to quickly heat the water to boiling?
A. Using a microwave oven to heat water in a glass jar for 3 minutes.
B. Shaking the water in a closed, insulated plastic bottle for 3 minutes.
C. Shining a battery-powered flashlight on a metal container of water for 10 minutes.
D. Placing a metal pot of water over glowing charcoal in an outdoor grill for 10 minutes.
D. Placing a metal pot of water over glowing charcoal in an outdoor grill for 10 minutes
An oven mitt is used because -
A. The mitts conduct thermal energy
B. The pan conducts thermal energy
C. The pan is an insulator
D. The mitts make the cook look cool
B. The pan conducts thermal energy
Which of the following is true about solutions?
A. The particles of the solute become very small
B. Evaporation can be used to separate solutions
C. The substance spreads out evenly
D. All of these options are true
D. All of these options are true
A cyclist is riding up and over a large hill at a constant speed. In which position is the cyclist using the most force to make the bicycle move?
A. Top of the Hill
B. Middle of the hill
B. Middle of the hill
What material would be safest to use as an insulator to cover electrical wires?
A. rubber
B. tin
C. aluminum
D. water
rubber
When light passes through things it ________.
A. bends or refracts
B. stays the same
Which term best describes a liquid turning in a gas
A. Melting
B. Condensation
C. Evaporation
D. Freezing
C. Evaporation
Which of these terms best describe a substances ability to be dissolved?
A. Density
B. Solubility
C. Insolubility
D. Conductivity
B. Solubility
Friction is the force between two objects when they come into contact with each other. More friction occurs when an object rubs or move against a _________________________ surface.
A. Smooth
B. Rough
C. Shiny
D. Flat
B. Rough
Which one is NOT a conductor?
A. Water
B. Plastic
C. Metal
D. Human Body
plastic
A student uses a set of headphones to listen to music. Which of these objects uses the same source of energy as the headphones?
A. A flute using wind energy.
B. A piano using mechanical energy.
C. A keyboard using electrical energy.
D. A teapot using thermal energy.
C. A keyboard using electrical energy
Pick two items that you know to be non magnetic
A. Copper penny
B. Iron Nail
C. Paperclip
D. Aluminum foil
A. Copper penny
D. Aluminum foil
When you separate a mixture with water and one ingredient sinks and one ingredient floats the property you use is -
A. evaporation
B. density
C. filtration
D. magnetism
B. density
Students are designing an experimental investigation where they determine how the height of a ramp affects the speed of a toy car by measuring how long it takes for the toy car to travel down different-sized wood ramps. What other scientific tool do the students need in order to complete this experimental investigation?
A. Hand lens
B. Metric ruler
C. Timing device (stop watch)
D. Spring scale
C. Timing device (stop watch)
Which of these substances conducts electricity the best?
A. wood
B. brick
C. copper
D. plastic
copper
Which term means to bounce off the surface of something?
A. Refract
B. Absorb
C. Reflect
D. prism
C. reflect