Measuring Mass & Converting Units
What tool do we use to measure mass?
A balance or scale
A push or a pull on an object is called a ______.
Force
Motion means a change in an object’s ______.
Position
Energy in motion is called ______ energy.
Kinetic energy
What do bar graphs show?
Comparisons between data.
What is the base unit of mass in the metric system?
Gram (g)
True or False: Balanced forces cause motion.
False
What is the formula for speed?
Speed = Distance ÷ Time
Stored energy or energy of position is called ______ energy.
Potential energy
What goes on the X-axis of a bar graph?
Categories or names.
1 kilogram = ______ grams
1000 grams
When two forces are equal, what happens to the object?
It stays still or moves at the same speed.
A car travels 100 m in 10 seconds. What is its speed?
10 m/s
A ball on top of a hill has what kind of energy?
Potential energy.
What goes on the Y-axis of a bar graph?
Numbers or quantities
Convert 3 kilograms to grams.
3000 grams
What happens when forces are unbalanced?
The object changes its motion (moves or changes direction).
If a runner moves at 5 m/s for 20 seconds, what distance does he travel?
100 m
When the ball rolls down, it has what kind of energy?
Kinetic energy
If a bar is taller, does it show a greater or smaller value?
Greater value.
A pencil has a mass of 25,000 g. How many kilograms is that?
25 kg
Give one example of an unbalanced force in real life.
A ball being kicked, a car starting to move, etc.
Who studied how objects move and fall?
Galileo Galilei
True or False: Energy can change from potential to kinetic.
True
Why are bar graphs useful in Science experiments?
They help us compare and visualize results easily.