Motion, Light, Sound Differentiate

A student investigates the pitch of sound with different amounts of water in identical glasses. Which glass produces the highest pitch?

• glass C has the highest pitch

• glass A has the highest pitch

Answer explanation

Sound vibrates through the liquid and makes sound waves. Wavelengths define the pitch. Wavelengths that are close together are high frequency. They produce high pitches. When wavelengths are further apart, the frequency is lower and are lower pitches.

Tags

.PS.2.b2

Ohio

The flower appears blue in sunlight.  Blue, green, red, yellow, and other colors make up sunlight. 

Which colors should be in the “absorbed” rectangle, and which colors should be in the “reflected” rectangle?

You do NOT need to fill all the blank boxes.

_{5.PS.2.a1 Given an object, explain how it would change the path of light (e.g., a mirror will reflect light, a dark cloth will absorb light, etc.).}

a

b

c

d

red

yellow

blue

green

Answer explanation

When you see a colored object, you're really seeing the color of the light that is being reflected. All other colors are absorbed by that object.

This sunflower is reflecting yellow and is absorbing all of the other colors.

Tags

5.PS.2.a1

light

reflect

color

absorb

An ant crawls from point X to Y up a table leg, then across the table top to point Z. Each square on the graph measures 50 cm. It took the ant 2 minutes to walk from X to Z.

• 4 cm/min

• 100 cm/min

Answer explanation

Each block that the ant travelled was 50 cm long. Our ant traveled over 4 blocks, so her total distance was 50x4 or 200cm.

Then take the total distance, 200cm and divide it by the total time 2 minutes. That gives us 100cm per minute.

Tags

speed distance force averagespeed

A student wants to increase the temperature of water in a glass.

A. Which color of cup would absorb the most heat?

B. Which position of the lamp would increase the temperature the most?

• Black cup and light facing down.

• White cup and light facing down

Answer explanation

If light is more intense, it is hotter. Think about the sun being directly overhead. That is when the sun is most hot. The same is true for a light bulb.

Also, as the video shows, dark colors absorb more heat than lighter colors.

Tags

5.PS.2

Light

sound

Which statement is true about how force and mass can affect speed?

• The cart with the 1 kg block will go faster than the cart with the 4 kg block.

• The car with the highest fan and no weight will go the fastest.

Answer explanation

Friction is greater when there is a bigger mass. That's what prevents a larger object from moving as quickly as one with a smaller mass.

Tags

5.PS.1.c

Ohio

What does this picture show?

Apply an unbalanced force to an object to change its motion (e.g., accelerate it, stop it, start it).

• An imbalanced force of 500 Newtons

• An imbalanced force of 50 Newtons

Answer explanation

https://phet.colorado.edu/sims/html/forces-and-motion-basics/latest/forces-and-motion-basics_all.html

Tags

NGSS

PS.FM.3b

Which is an example of an energy transfer?

• a batter ready to hit a baseball

• wind blowing a grain of sand

Answer explanation

When energy transfers from one object to another, there is a change in motion.

Tags

5.PS.2

Ohio

Which has potential energy?

• a ball in hand

• a ball in the air

Answer explanation

https://phet.colorado.edu/en/simulations/energy-skate-park

Tags

5.PS.2.a1

What will most likely help Molly improve her softball hitting?

• a heavier ball and a heavier bat

• a lighter ball and a heavier bat

Tags

OH

5.PS.1.c

Which wave has a greater amplitude?

• Solid Line

• Dotted Line

Answer explanation

Wavelengths and waves occur in both liquid and in sound.

Tags

5.PS.2.c2

Ohio