Science Final Exam - Third Period.

The best definition for Meteorology is:

• Meteorology is the study of the atmosphere, atmospheric phenomena, and atmospheric effects on our soil.

• Meteorology is the study of the atmosphere, atmospheric phenomena, and atmospheric effects on our weather.

• Meteorology is the study of the layers of earth, and atmospheric effects on our weather.

• Meteorology is the study of the atmosphere, atmospheric phenomena, and atmospheric effects on our seas.

Answer True or False.

Speed: How Quickly Motion Occurs.

If an object is static, its position does not change. Over time, that will result in a certain distance from which the object travels.

• True

• False

The formula to find the speed is:

• $speed=\frac{time}{dist}$

• $speed=\frac{dist}{time}$

• $speed=\frac{dist}{Accel}$

• $speed=dist^2$

Solve:

A car travels 78 miles down the highway. It takes the car 1,2 hours to travel that far. At what speed is the car traveling?

• $65\ \frac{m}{h}$

• $65\ m$

• $65\ \frac{h}{m}$

• $65\ km$

Answer True or False.

Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.

• True

• False

Gravity is:

• The force that attracts a body towards the centre of the earth, or towards any other physical body having mass.

• The force that attracts a body towards outside of the earth, or towards any other physical body having mass.

• The phenomena that react pushing a body towards the centre of the earth, or towards any other physical body having mass.

• The force that attracts a body in front of another and pulls out of the earth, or towards any other physical body having mass.

Answer True or False.

Sir Isaac Newton's three laws of motion describe the motion of massive bodies and how they interact.

• True

• False

The formula to get FORCE is:

• $force=\frac{mass}{accel}$

• $force=\ mass\times accel$

• $force\ =\ accel+mass$

• $force\ =\ accel-mass$

The Third Newton's Law says:

• For every action, there is an equal and opposite reaction.

• States that the acceleration of an object is directly related to the net force and inversely related to its mass.

• States that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

• The velocity of an object will not change unless the object is acted on by an outside force.

It is described as a movement of an object while rotating along a circular path. Circular motion can be either uniform or non-uniform.

This is a definition of:

• The Newton's First Law.

• Straight Motion.

• Circular Motion.

• Perpendicular Motion.