Daily Science ReviewFebruary 10, 2014

Monday

1. How are an amoeba and a human being alike?

a. Both are made from many cells.

b. Both are single cells.

c. Both are made of a cell or cells with a nucleus.

d. Both are made of a cell or cells with a chloroplast.

17

Tuesday

2 Which statement is not true?

a. Microorganisms help dead things decay.

b. Microorganisms have only one cell.

c. Microorganisms cause disease.

d. Microorganisms are used to make cheese.

18

Wednesday

3. When two balloons repel each other, the best explanation is:

a. They have opposite charges.

b. They have mixed charges.

c. They are uncharged.

d. They have the same charge.

19

Thursday

4. When hydrogen and oxygen gas react, they explode and form water. What kind of change is that?

a. physical

b. chemical

c. Both physical and chemical

d. Neither physical nor chemical

20

Friday 21

5. When placed side by side, two balloons stay where they are placed. They do not move any closer together. They do not move any farther apart. What is the BEST explanation?

a. They have the same charge.

b. They have mixed charges.

c. They are uncharged.

d. They have opposite charges.