Matter
Mixtures and Solutions
Forms of Energy
Electrical Circuits
Force and Motion
100
What statement BEST describes a liquid?
Liquids have a variable shape and definite volume.
100
On a hot day, your friend brings you some iced tea to cool off. Only, its unsweetened. You add sugar, but it just does not dissolve fast enough. Which procedure would speed up the dissolving process?
Take out the ice and stir it up outside where it is warmer.
100
Nora's class is studying heat at school. Her teacher asked everyone to keep a list over the weekend of different ways they saw heat being produced.
Nora's family went camping. Which way did her family MOST LIKELY produce heat energy while camping?
A by burning
100
Wires used in the cables of household gadgets have a plastic covering. This is because plastics
are poor conductors of electricity.
100
What is the net force?
0
200
Based on the data presented in the Venn Diagram, circle B MOST LIKELY represents the __________ phase.
liquid
200
Josh is experimenting to try and find how to speed up the dissolving of a solid in water. Which will NOT increase the rate of dissolving?
Using large solute particles
200
If you hit a drum extremely hard, it will make a loud sound. The same drum, if you hit it softly, will make a much lower volume sound. Why does hitting the drum at different strengths produce different volumes?
Because the vibrations are not the same strength.
200
Alan's lamp stops working. He notices that the cord of the lamp is broken. He ties the wires back together, but notices that some wire remains exposed. Alan correctly identifies that this is an unsafe situation.
Which material would be best for repairing and surrounding the broken cord?
duct tape
200
A soccer ball sits motionless on the grass. The student claims that balanced forces are acting on the ball. Which Newtons law BEST supports the student’s claim?
Newton Law of Interia. 1st law
300
The fact that you can measure the volume of room temperature water with a beaker is a clue that room temperature water is in liquid form. If you keep raising the temperature of that water, it will eventually begin to boil, bubbling up and releasing steam.
a gas.
300
The material that is NOT soluble in water is
Oil
300
When a ruler strikes the top of a wooden desk, energy is transferred and a sound is made. This occurs because it causes vibrations to pass through the wood of the desk. What else is happening?
The air molecules around the desk will vibrate as well.
300
Which material is a good conductor of electricity?
Copper
300
Why does a raindrop accelerate as it falls to the earth?
The force of gravity pulls on the drop
400
The same amount of an unknown substance is used to fill up three different balloons. After the balloons are filled up, they each have a different shape. One balloon is long and skinny. The second balloon is round. The third balloon is shaped like an oval.
The unknown substance could either be a liquid or a gas.
400
Think about the substances of each mixture. Which substance is insoluble?
oil in water
400
The items listed below need energy to do their jobs. Which two items use the same form of energy to do their jobs?
A drum and a hammer
400
Which part of the circuit is the load?
Lightbulb
400
Changes in motion are caused by
unbalanced forces
500
Matter is measured in many different forms. All the answers are correct except one. Which one is NOT correct?
Shape
500
- sugar in water
- drink powder mix in water
- salt in water
Think about the substances in the mixtures listed below. What is true about each substance?
Each substance dissolves in the water.
500
Which type of energy shown on the diagram is an example of mechanical energy?
bicycle
500
What object would allow electricity to flow correctly
Copper wire, Aluminum foil, Safety pin
500
Anna learned that every magnet has a north and a south end called poles. She notices that when she puts the north end of a magnet near the south end of another magnet, they pull together. What can Anna conclude from her observation?
Opposite poles of magnets attract.