Scientific Skills
Question: What is the term for an educated guess based on observations?
Answer: What is an inference?
Define energy
Energy is the ability to do work.
Define energy transfer. Use the definition that would apply when you turn on a light bulb.
An energy transfer is the movement of energy from one place to another place.
Question: On a distance/time graph, a straight, diagonal line shows an object moving at a constant speed.
What does a flat, horizontal line on the same graph indicate about the object’s motion?
Answer: What is the object is at rest (not moving)?
Question: What do we call the area around a magnet where magnetic forces can be felt?
Answer: What is a magnetic field?
Question: Which scientific skill involves using your senses to gather information about the natural world and is described using numbers or amounts?
Answer: What is a quantitative observation?
As Felix rides his bicycle down the hill, what is happening?
(a) kinetic energy changing to potential energy
(b) electrical energy changing to kinetic energy
(c) potential energy changing to kinetic energy
(d) kinetic energy changing to electrical energy?
(c) potential energy is changing to kinetic energy
Define energy transformation. Use the definition that would apply when electrical energy changes to into light energy.
Energy transfer is the change in energy from one form to another form.
Two Parts:
What is speed?
What is the equation for calculating speed?
Speed is the measurement of how fast an object's position changed in a given amount of time.
The equation for calculating speed is Speed = Distance/Time
Question: What type of charge is carried by electrons?
Answer: What is a negative charge?
Question: When graphing experimental results, which variable is placed on the x-axis?
Answer: What is the independent variable?
Define potential energy.
Potential energy is stored energy.
The electricity goes out of the wall socket into the lamp. Describe the energy transfer that has just happened.
The electrical energy moves from the socket to the lamp and transform into light and heat.
Question: Two people are trying to move a refrigerator. One person is pushing to the right with a force of 25 Newtons and the other is pulling on the right side with a force of 15 Newtons.
What is the overall net force and direction of the refrigerator movement?
Answer: What is 40 Newtons and to the right?
Question: What happens when a magnet is cut in half?
Answer: What is each half becomes a magnet with its own north and south poles?
Question: In the hypothesis, "If plants are given more sunlight, then they will grow taller," what is the dependent variable?
Answer: What is the height of the plants?
Define kinetic energy.
Kinetic energy is the energy that an object has due to its motion.
A drone is flying. Explain two of the three different energy transfers that happen. (think about all the energy that is transferred when a drone is flying)
(1) electrical energy from the drone battery moves to the drone motor.
(2) electrical energy changes into kinetic energy as the drone flies
(3) electrical energy changes into sound energy
Question: According to Newton's 1st Law of Motion, what property of an object resists changes to its state of motion?
Answer: What is inertia?
Question: Through which medium does sound travel the fastest: solid, liquid, or gas?
Answer: What is a solid (Because the particles are closer together, allowing the sound waves to travel faster from 1 particle to the next)?
Question: What type of observation describes qualities such as color, texture, or smell rather than numerical data?
Answer: What is a qualitative observation?
Complete this quote from Albert Einstein
"Energy cannot be created or _________ . It can only be ________ from one form to another."
Energy cannot be created or destroyed. It can only be changed from one form to another.
During a collision of two cars hitting each other, name at least 2 forms of energy transfer
what is sound energy
kinetic energy
heat energy
Question: If a car slows down from 25 m/s to 15 m/s in 4 total seconds. What is his acceleration? (hint: use the acceleration formula)
Answer: What is -2.5 m/s/s (or m/s2)
Question: What happens when two objects with the same type of electric charge are placed near each other in an electric field?
Answer: What is they repel each other?