Question

name
date
3.1 assessment
match each description on the left with the type of energy it best matches on the right.
each type of energy may be used only once.
description\ttype of energy

1. ____ geysers, hot springs, and volcanoes\ta. solar energy
2. ____ water at the top of a waterfall\tb. potential energy
3. ____ wind, river flow, and waves\tc. nuclear energy
4. ____ sunlight\td. kinetic energy
5. ____ trees, batteries, and natural gas\te. thermal energy
6. ____ fission and fusion\tf. chemical energy

circle the letter of the best answer for questions 7 to 22.

1. which parts of the human body rely on electrical signals to work?

i\theart
ii\tmuscles
iii\teyes
a. i and ii only\tc. ii and iii only
b. i and iii only\td. i, ii, and iii

1. how does a capacitive touch - sensitive screen work on a tablet?

a. the pressure from a touch command completes an electrical pathway.
b. when the user’s finger touches the screen, a tiny electrical charge passes through it to complete an electrical pathway.
c. the pressure from a touch command generates a magnetic field.
d. when the user’s finger touches the screen, a flexible plastic expands and contracts.

1. what causes a maglev train to levitate?

a. electrical coils create magnetic fields that repel large magnets under the train
b. nuclear propulsion
c. upward jets of compressed air
d. antigravitational acceleration
nel·3.1 assessment

Explanation:

Question 1 (Matching)

Step 1: Analyze Description 1

Geysers, hot springs, and volcanoes involve heat, so match with E (thermal energy).

Step 2: Analyze Description 2

Water at the top of a waterfall has stored energy (height), so match with B (potential energy).

Step 3: Analyze Description 3

Wind, river flow, and waves involve motion, so match with D (kinetic energy).

Step 4: Analyze Description 4

Sunlight is solar energy, so match with A.

Step 5: Analyze Description 5

Trees (biomass), batteries, and natural gas store energy in chemical bonds, so match with F (chemical energy).

Step 6: Analyze Description 6

Fission and fusion are nuclear processes, so match with C (nuclear energy).

Question 7

• The heart (I) uses electrical signals for rhythm.
• Muscles (II) respond to electrical impulses from nerves.
• Eyes (III) use electrical signals in the retina (via photoreceptors and neurons). Thus, all three rely on electrical signals.

Question 8

Capacitive touchscreens work by detecting the electrical charge of a finger (conductive). Option A is for resistive (pressure-based) screens. Options C and D describe non - capacitive mechanisms.

Question 9

Answer:

1. E. thermal energy
2. B. potential energy
3. D. kinetic energy
4. A. solar energy
5. F. chemical energy
6. C. nuclear energy