Part 1: True/False. Write Tor F on the line for each statement. 1. In the 1990's a computer was so large that it would have filled a classroom.
2. Mass is the amount of matter an object has.
3. A hypothesis is unreasonable guess made to explain a problem.
4. The metric unit used to measure volume is liter.
5. The metric unit used to measure length is gram.
6. The first step usually followed to solve a scientific problem is theory.
7. The explanation used to answer or solve scientific problems is the
hypothesis.
8. Circular motion moves in a straight line.
9. Translational motion, rotational motion, and vibrational motion are the three
basic kinds of motion.
10. Velocity describes the distance in which an object is moving.
11. Friction between surfaces can be reduced by smoothing the surfaces or by
using a lubricant.
12. Deceleration is the rate of decrease in velocity.
13. Distance multiplied by time is known as speed.
14. Centripetal force keeps an object moving in a circle.
15. Objects traveling along a rough surface slow down because of inertia.
16. When the forces acting on an object are balanced the object is in equilibrium.
17. When a bus stops suddenly, the passengers keep moving ahead.
18. A force is needed to change an object's direction of motion.
19. Torque is the imaginary line around which an object rotates.
20. When the forces acting on an object are balanced, the object is in
equilibrium.