Science

What is the net force. 5-3=__ left or right

2 - right

What is the net force. 6 , 4 , 2 up or down

4 - up

When light rays hit a reflective surface, like a mirror or the back of a spoon, they bounce off of it. If they hit the surface at an angle, the angle they hit the surface will be equal to the angle of reflection (law of reflection). If a light ray hits a spoon at an angle of 80°, at what angle will the light ray reflect off of the spoon?

80°

On a roller coaster the point at which has the greatest potential energy is?

The top of highest hill

Define reflection

When something bounces off an object.

What color reflects all light? What color absorbs all light?

White reflects all light and black absorbs all light

What is kinetic energy?

energy of motion

At which TWO points does the pendulum have the most potential energy?

1 and 5

Why do apples look red?

The apple absorbs all colors except the color red.

Describe Newton's 2nd law of motion.

The greater the mass of an object, the more force is needed.

Whether an object is transparent, translucent, or opaque is determined by its ability to ____ light.

Transmit

Define transparent

Allows all light to pass through.

Describe Newton's 1st law of motion.

An object at rest will stay at rest. An object in motion will stay in motion unless acted upon by an unbalanced force

Define Opaque

Does not let light pass through.

What does Newton's 3rd law of motion state.

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

Complete the formula for Newton's 2nd law

Force = Mass x Acceleration.

Define translucent

Lets some light pass through

What are the two factors that determine an object's potential energy? Kinetic energy?

Potential energy = mass and height kinetic energy = mass and speed

What is the visible light spectrum in order?

Red, orange, yellow, green, blue, indigo, violet

When light is _______, it passes from one transparent material to another and changes direction.

Refracted