1. Check Point – Energy Unit Test Dr. Browne

2. 1. The ability to make things happen or do work is known as ______________ 2. There are two main types of energy: energy that is stored, ____________ and energy of motion is ___________. 3. Energy is conserved which means energy is not __________ or _____________ it is only _________. 4. Question # 3 explain the Law of _____________________________.

4. 5. Name that Energy: a. Energy built up due to height is … b. The energy of moving parts is… c. The energy of moving particles is … d. The energy stored in bonds is … e. The energy in the nucleus of atoms is known as … f. Energy that can travel through empty space is … g. Energy of moving electrical charges that flows through wires

6. 6. Kinetic Energy depends on two things ___________ and _____________. 7. The formula E = mc 2 means that ____________________________. 8. The formula in question #7 was developed by _________________. 9. When waste heat is released in to the environment it is known as _____________.

8. 10. Work is defined as the _________ needed to _________ an object. 11. The unit of work is a ____________. 12. The rate at which work is done is called ___________. 13. The unit used to describe #12 is ____________. 14. Work is made easier by using __________________.

9. 15. Name the a. b. c. d.d. e. f. g.

11. 16. The source of all energy in an ecosystem is the __________________. The source of all food is ________________. 17. True or False - All consumers directly or indirectly eat plants. 18. An energy role explains how an organism _________________________. 19. Explain the difference between producers, consumers, and decomposers. 20. Name that consumer: a.Only eats Meat: ___________ b.Only eats Producers: _____________ c.Eats both plants and animals: _____________ d.Eat dead materials : ______________________

13. 21. List the 2 important jobs of decomposers: ______________ and ______________. 22. A food chain shows how _____________ is passed through an ecosystem. A food web shows _________________________. 23. As energy moves through an ecosystem it follows ___________ direction.

15. 24. Look at the food chain below, name the energy roles of each of the biotic organisms (1-5). 25. Create an energy pyramid from the information below, label all parts of the energy pyramid! 1. 2. 3. 4. 5.

17. 26. In what order is food and energy passed through an ecosystem? 27. A food chain must always begin with a ______________________ because these organisms ____________. 28. Usually _________________ are left out of food chains. 29. Which is more accurate and realistic description of food and energy flow in an ecosystem – a food chain or a food web? 30. Look at the food chain below … which organism is a primary consumer? grass  caterpillar  bird  snake

19. ANSWER KEY

20. 1. The ability to make things happen or do work is known as ENERGY. 2. There are two main types of energy: energy that is stored, POTENTIAL ENERGY and energy of motion is KINETIC ENERGY. 3. Energy is conserved which means energy is not CREATED or DESTROYED it is only TRANSFERRED. 4. Question # 3 explain the Law of CONSERVATION OF ENERGY.

21. 5. Name that Energy: a. GRAVITATIONAL POTENTIAL ENERGY b. MECHANICAL ENERGY c. THERMAL (HEAT) ENERGY d. CHEMICAL e. NUCLEAR f. ELECTROMAGNETIC g. ELECTRICAL

22. 6. Kinetic Energy depends on two things MASS and VELOCITY. 7. The formula E = mc 2 means that MATTER CAN BE CHANGED INTO ENERGY AND VISA-VERSA. 8. The formula in question #7 was developed by ALBERT EINSTEIN. 9. When waste heat is released in to the environment it is known as THERMAL POLLUTION.

23. 10. Work is defined as the FORCE needed to MOVE an object. 11. The unit of work is a JOULE (J). 12. The rate at which work is done is called POWER. 13. The unit of used to describe #12 is WATT (W). 14. Work is made easier by using MACHINES.

24. 15. Name the a. b. c. d.d. e. f. g. Gear

25. 16. The source of all energy in an ecosystem is the THE SUN. The source of all food is PRODUCERS. 17. True or False - All consumers directly or indirectly eat plants. 18. An energy role explains how an organisms GETS ITS ENERGY (FOOD) AND INTERACTS. 19. Explain the difference between producers, MAKE OWN FOOD, PHOTOSYTHESIS consumers, EAT PRODUCERS DIRECTLY OR INDIRECTLY decomposers, BREAK DOWN WASTE AND RETURN NUTRIENTS TO ECOSYSTEM 16. Name that consumer: a.Only eats Meat: CARNIVORE b.Only eats Producers: HERBIVORE c.Eats both plants and animals: OMNIVORE d.Eat dead materials : SCAVENGER

26. 21. List the 2 important jobs of decomposers: BREAK DOWN WASTES and RETURN NUTRIENTS TO THE SOIL. 22. A food chain shows how ENERGY is passed through an ecosystem. A food web shows OVERLAPPING FOOD CHAINS. 23. As energy moves through an ecosystem it follows ONE direction.

27. 24. Look at the food chain below, name the energy roles of each of the biotic organisms (1-5). 25. Create an energy pyramid from the information below, label all parts of the energy pyramid! 1. 2. 3. 4. 5. producer herbivore carnivore decomposer

28. Producers - Grass Herbivore - Mouse Carnivore – Snake, Hawk Least Energy Most Energy Secondary Consumers Primary Consumers

29. 26. In what order is food and energy passed through an ecosystem? SUN  PRODUCER  CONSUMER  DECOMPOSER 27. A food chain must always begin with a PRODUCER because these organisms HAVE THE MOST ENERGY AND MAKE THEIR OWN FOOD. 28. Usually DECOMPOSERS are left out of food chains. 29. Which is more accurate and realistic description of food and energy flow in an ecosystem – a food chain or a food web? 30. Look at the food chain below … which organism is a primary consumer? grass  caterpillar  bird  snake