Milestones Review 3

Two jars are placed inside an insulated box. One jar contains ice water and the other contains hot soup. What will happen to the two liquids? 

• Both the hot soup and the ice water will gain heat. 
• Both the hot soup and the ice water will lose heat. 
• The hot soup will gain heat and the ice water will lose heat. 
• The hot soup will lose heat and the ice water will gain heat. 

Suppose you had four spoons the same size and shape made out of glass, plastic, steel, and wood. Which spoon handle would get hot the quickest when the spoons are placed in a pan of hot water? 

• the glass spoon
• the plastic spoon
• the steel spoon
• the wooden spoon

Which of these is not a form of energy? 

• electrical
• light
• heat
• friction

Which represents kinetic energy?

• A bear standing in a field of berries.
• A salmon resting in still waters.
• A bear holding a salmon that it has caught
• A salmon leaping up a waterfall

In an amusement park a moving bumper car (car 1) collides with a bumper car at rest (car 2) and, after the collision, both cars move. If momentum is conserved, which statement is correct

• The momentum of car 1 increases and the momentum of car 2 decreases.
• The momentum of car 1 decreases and the momentum of car 2 increases.
• The total momentum of both cars increases.
• The total momentum of both cars decreases.

Waves 1 and 2 show two different sound waves. Look carefully at the two waves. In what ways do their wave characteristics differ?

• Wave 1 has a longer wavelength and lower amplitude than Wave 2.
• Wave 1 has a shorter wavelength and a higher amplitude than Wave 2
• Wave 1 has a longer wavelength and a higher amplitude than Wave 2. 
• Wave 1 has a shorter wavelength and a lower amplitude than Wave 2. 

Which situation is an example of increasing potential energy?

• Pulling a wagon uphill
• Emptying a bucket of water
• A cat jumping from a tree
• A bicyclist stopping at a stop sign

On a cold, winter day, Sheena rubs her hands together. Stored chemical energy is transformed into mechanical energy. Due to the Law of Conservation of Energy some of the energy is also transformed into

• heat energy
• light energy
• solar energy
• kinetic energy

You are sitting on the edge of a pool with your legs in the water. As light waves pass from the pool into the air, it looks like your legs are not attached at the knees where they meet the water. This is because light waves ____ when they pass from one medium to another. 

• are amplified
• diffract
• refract
• reflect

Electromagnetic waves and mechanical waves are alike and different. What is one way in which these waves are similar?

• Both types of waves require a medium.
• Both types of waves have a frequency.
• Both types of waves transmit matter.
• Both types of waves have a pitch.