According to the Law of reflection, a light ray striking a mirror: 1- continues moving through the mirror in the same direction. 2- bounces off the mirror at the same angle it hits
2- bounces off the mirror at the same angle it hits
Oops!
Check
Okay!
Check
thief
Give points!
5
10
15
20
25
gift
Win 15 points!
Okay!
shark
Other team loses 5 points!
Okay!
baam
Lose 25 points!
Oops!
25
Which device uses direct current?
Torch light
Oops!
Check
Okay!
Check
25
Which graph represents Alternating current? Explain your answer
B as the electrons move in different directions.
Oops!
Check
Okay!
Check
25
A(n) ……………………………………….wave is called a seismic wave. A. water. B. sound. C. earthquake.
C. earthquake.
Oops!
Check
Okay!
Check
25
When a plastic ruler attracts tiny pieces of paper after rubbing it to your hair, this is an example of________________ a- current electricity b- static electricity
b- static electricity
Oops!
Check
Okay!
Check
baam
Lose 20 points!
Oops!
shark
Other team loses 15 points!
Okay!
rocket
Go to first place!
Okay!
banana
Go to last place!
Oops!
heart
Other team wins 10 points!
Oops!
gift
Win 20 points!
Okay!
gift
Win 10 points!
Okay!
baam
Lose 10 points!
Oops!
20
………….is the number of waves passing through a point un one second. A. amplitude. B. wavelength C. frequency
C. frequency
Oops!
Check
Okay!
Check
15
20- The accumulation of excess electric charge (positive or negative) on an object is called A- Static electricity B- Electric discharge C- Resistance
A- Static electricity
Oops!
Check
Okay!
Check
baam
Lose 10 points!
Oops!
shark
Other team loses 25 points!
Okay!
fairy
Take points!
5
10
15
20
25
lifesaver
Give 25 points!
Oops!
15
Which term describes changing direction of a wave when it passes through two different transparent media? A. Refraction. B. Reflection. C. Diffraction.
Refraction.
Oops!
Check
Okay!
Check
15
Seismic waves can be…………………………… . A. transverse B. longitudinal C. a combination of longitudinal and transverse