Question

name date assessment topic 3.1 10. scientists have developed a plastic that expands and contracts slightly in response to electrical energy. what has this enabled scientists to build? a. maglev trains b. capacitive touch - sensitive screens c. photovoltaic cells d. robots with human - like hand and facial movements 11. you stir some cream into a cup of warm coffee with a spoon. what types of energy are evident in this example? a. kinetic and thermal energy b. potential and kinetic energy c. kinetic, thermal, and chemical energy d. kinetic, thermal, and mechanical energy 12. what type of reactions occur in the sun? a. solar reactions b. fusion reactions c. fission reactions d. thermal reactions 13. thermal energy is generated through the rapid motion of the particles that make up an object. based on this description, what other type of energy could thermal energy be classified as? a. potential energy b. kinetic energy c. mechanical energy d. chemical energy 14. which of the following types of energy is released by forming new atoms? a. nuclear energy b. chemical energy c. atomic energy d. formation energy 3.1 assessment·nel

Explanation:

Question 10

The plastic that expands and contracts with electrical energy can be used in creating parts that move like human body parts. Maglev trains use magnetic levitation, capacitive touch - sensitive screens work on capacitance principles, and photovoltaic cells convert light to electricity. So the plastic's property is useful for making robots with human - like movements.

Question 11

Stirring (kinetic energy as the spoon and cream are moving) and the warm coffee has thermal energy. There's no chemical reaction (so no chemical energy) and mechanical energy is a broader term, but kinetic (from stirring) and thermal (from warm coffee) are the main ones here.

Question 12

In the Sun, hydrogen atoms fuse together to form helium, releasing energy. Fission is splitting of atoms, solar and thermal are not the types of reactions occurring at the core for energy production.

Question 13

Answer:

D. robots with human - like hand and facial movements