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The bending of light rays as they enter a new medium is called
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To determine the acceleration rate of an object, you must calculate the change in speed during each unit of
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BJHS Science Sem1
| Question | Answer |
|---|---|
| The bending of light rays as they enter a new medium is called | refraction |
| To determine the acceleration rate of an object, you must calculate the change in speed during each unit of | time |
| Speed equals distance divided by | time |
| The SI (metric) unit for force is the | Newton |
| A place or object used for comparison to determine if something is in motion is called | a reference point |
| If you know the distance an object has traveled in a certain amount of time, you can determine | the speed of the object |
| Air resistance is a type of | friction |
| Which term refers to how high or low a sound seems to a person? | pitch |
| The tendency of an object to resist change in its motion is known as | inertia |
| When an object’s distance from another object is changing, | it is in motion. |
| Forces can be added together only if they are | acting on the same object |
| The amount of matter in an object is called its | mass |
| Waves that move the particles of the medium parallel to the direction in which the waves are traveling are called | longitudinal waves. |
| When the surface of a mirror curves inward, like the inside of a bowl, it is called a | concave |
| If speed is measured in kilometers per hour and time is measured in hours, the unit of acceleration is | kilometers per hour per hour |
| In an acceleration graph showing speed versus time, a straight line shows the acceleration is | constant |
| Sound is a disturbance that travels through a medium as a | longitudinal wave |
| Frequency is measured in units called | Hertz |
| According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail | exerts an equal force back on the hammer |
| What color would a tomato look under blue light? | black |
| What happens when light passes from air into water? | The light slows down |
| The rate at which velocity changes is called | acceleration |
| In physical science, a push or a pull is called a(n) | force |
| The maximum distance that the particles of a medium move from the rest position is the | amplitude of the wave |
| One way to increase acceleration is by | decreasing mass (or increase force) |
| The primary colors of light are | red, green, and blue |
| You can hear sounds from around corners because of | diffraction |
| When you know both the speed and direction of an object’s motion, you know the | velocity of the object |
| What occurs when vibrations traveling through an object match the object’s natural frequency? | resonance |
| Changing direction is an example of a kind of | acceleration |
| The achievement of lifting a rocket off the ground and into space can be explained by | Newton's Third Law- For every action, there is an equal and opposite reaction. |
| The electromagnetic waves with the highest frequencies are called | gamma rays |
| Loudness, or sound level, is measured in units called | decibels |
| What happens when parallel rays of light hit a smooth surface? | regular reflection |
| The bending of waves due to a change in speed is called | refraction |
| The product of an object’s mass and velocity is called its | momentum |
| What do some bats use to locate food and to navigate? | echolocation |
| Which of the following is the correct equation for acceleration? | final speed - initial speed / time |
| Electromagnetic waves can transfer energy without a(n) | medium |
| This is an example of increasing friction intentionally. | throwing sand on an icy driveway |
| You can show the motion of an object on a line graph in which you plot distance against | time |
| What is transferred by electromagnetic waves? | electromagnetic radiation |
| The speed of a wave is its wavelength multiplied by its | frequency |
| What is an example of exerting a force? | hammering a nail, pulling a rope, slapping a table are all examples of exerting force |
| A curved piece of glass or other transparent material that is used to refract light is called a(n) | lens |
| What is required for a rocket to lift off into space? | thrust that is greater than Earth’s gravity |
| If the speed of an object does NOT change, the object is traveling at a | constant speed |
| The range of electromagnetic waves placed in a certain order is called the | electromagnetic spectrum |
| What happens when two forces act in the same direction? | They add together |
| Average speed is calculated by dividing | the total distance traveled by the total time |
| The force that one surface exerts on another when the two rub against each other is called | friction |
| On a graph showing distance versus time, a horizontal line represents an object that is | not moving at all. |
| When a wave hits a surface through which it CANNOT pass and bounces back, it undergoes | reflection |
| Mechanical waves are created when a source of energy causes a medium to | vibrate |
| The changing pitch of a police car’s siren as it moves by you is an example of | the Doppler effect |
| The interaction between two waves that meet is called | interference |
| Refraction occurs when a wave | enters a new medium at an angle |
| The distance between two corresponding parts of a wave is the wave’s | wavelength |
| The pitch of a sound that you hear depends on the sound wave’s | frequency |
| The moon accelerates because it is | continuously changing direction |
| If a bicyclist travels 30 kilometers in two hours, her average speed is | 15 km/h |
| Which waves have some electrical properties and some magnetic properties? | electromagnetic waves |
| If you know a car traveled 300 kilometers in 3 hours, you can find its | average speed |
| The bending of waves around the edge of a barrier is known as | diffraction |
| A disturbance that transfers energy from place to place is called a | wave |
| Objects falling through air experience a type of friction called | air resistance |
| Doctors are able to make sonograms through the use of | ultrasound |
| The highest parts of a transverse wave are called | crests |
| Any force that causes an object to move in a circle is called a(n) | centripetal force |
| How can you increase the momentum of an object? | by increasing its mass |
Created by:
Ms. Traynor-Grimes (Ms.TG)
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